This is AT&T Galaxy S2 FAQ that will help you root your phone, backup/install ROMs, backup/install apps, and more.
If you don’t know what rooting means, please watch this video first:
- How to Root AT&T Galaxy S2 on Windows! (ICS) – This is how you root your AT&T Galaxy S2 on ICS.
- How to Root AT&T Galaxy S2 on Windows! (Gingerbread) - You will need to root your Galaxy S2 before trying to install new ROMs.
- How to Root AT&T Galaxy S2 on Mac and Linux (Gingerbread) - Here’s how to root on Mac and Linux.
- How to Unroot to ICS on AT&T Galaxy S2! – This is how to unroot your AT&T Galaxy S2 back to official AT&T factory ROM. Also if you are returning for warranty purposes or don’t have Windows, here’s how to do it using Mobile ODIN.
- How to Unroot AT&T Galaxy S2 to Gingerbread! – Here’s how to unroot your AT&T Galaxy S2 back to factory.
- How to Unroot AT&T Galaxy S2 to ICS! – Here’s how to unroot your AT&T Galaxy S2 back to factory ICS.
- How to Overclock AT&T Galaxy S2 to 1.6Ghz! – This shows you how to overclock your AT&T Galaxy S2 to 1.6Ghz using a custom kernel.
- How to Install Kernel on Galaxy S2! – This shows you how to to use ClockworkMod Recovery (CWM) to install new Kernel on your Galaxy S2!
- How to Dual-Boot Two ROMs on AT&T Galaxy S2! – This shows you how to dual-boot two ROMs on your AT&T Galaxy S2.
- How to Install New ROM on Galaxy S2! - This shows you how to use ClockworkMod Recovery (CWM) to install new ROM on your Galaxy S2!
- How to Backup/Restore ROM on Galaxy S2! - This shows you how to backup/restore ROMs on your Galaxy S2. It’s highly recommended you do at least one backup after rooting and before installing any new ROMs.
- How to Backup/Restore Apps on Galaxy S2! - This shows you how to backup/restore apps on your Galaxy S2. It’s highly recommended you do at least one backup of all your apps after rooting and before installing any new ROMs so you can restore your apps back easily whenever needed.
- How to Install Flash Player on ICS or Jelly Bean! – Need flash player? Just do this!
- How to Get Rid of Yellow Triangle with Triangle Away app! - Want to reset your binary counter? Get rid of yellow triangle at boot? See this.
- How to Disassemble/assemble Galaxy S2! - Need to fix hardware on your Galaxy S2? See how to disassemble and re-assemble your phone here.
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You will need a rooted Galaxy S2 to install all ROM/kernels.
NOTE: PLEASE ONLY INSTALL ROMS INTENDED FOR YOUR VERSION OF Galaxy S2! Otherwise you WILL BRICK YOUR PHONE and I will not be responsible!
First time to rooting and custom ROMs?
Please see our FAQ for your Galaxy S2 model FIRST!!!:
Galaxy S2 GT-i9100 FAQ
Galaxy S2 SGH-i777 (AT&T) FAQ
Galaxy S2 SGH-T989 (T-mobile) FAQ
Galaxy S2 SPH-D710 (Sprint) FAQ
Galaxy S2 ROMs
Galaxy S2 GT-i9100 ROMs
Galaxy S2 SGH-i777 AT&T ROMs
Galaxy S2 SGH-T9989 T-Mobile ROMs
Galaxy S2 SPH-D710 Sprint ROMs
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Thank you so much! This site is amazing. I just switched to the GSII after having an iPhone since it began. After reading all the helpful info on your site I have sucessfully rooted my ATT GSII and am running the NoName ROM and even overclocked it to 1.6GHz. This phone is absolutely amazing. Keep up the great work on this site.
Thanks!
I rooted my AT&T SGH-I777, and it worked great. I’m seeing one weird thing that may have nothing to do with your kernel. I was seeing some weirdness that I wanted to run by you. I was trying out a Skype video call when I got the message that my battery was low, and I needed to plug in. So I did, and let it charge for 2-3 hours (I really don’t remember how long), and I got the message that the battery was charged and that I should unplug it. When I picked it up the whole phone was surprisingly warm all around the battery.
When I unplugged the power cable, I noticed that the battery status only showed 22%. I messed with it for 30 minutes or so, then I got the message that the battery was low again, and I should plug in.
Thinking that the battery didn’t charge because the phone was on with several background processes running, I powered the phone off and plugged it in.
Here’s the wierdness: After charging for 1-2 minutes with the phone off, the damn thing turned itself on! Thinking maybe I bumped the power button, I powered it off and tried again, and sure enough the phone turned itself back on again after a couple of minutes! Sorry for the long lead-up to my question: Could this behavior have anything to do with your rooted kernel, or is this normal behavior for this phone?
Thanks so much!!!
Kent Smith
Most likely not, try draining battery all the way out then recharge all the way, sometimes new kernels/roms can cause battery status to function incorrectly until a full drain then full charge. Try that it should solve it.
That did the trick! Thanks so much.
Hello
I have been a Apple fan for years, well I ended up getting a Galaxy S2 because to make a long story short Apple upset me. Anyway I am really enjoying this phone and the Droid operating system. I wanted to take time to say since I found your site I have learned a lot, not to mention everything you have shown works just like you say. I can only say THANK YOU so much for the time you have taken to do this. How its just a matter of finding out what all i can do or find since my phone is now rooted, overclocked and has a custom rom on it.
THANK YOU !!!!!
Hey there… I wanted to drop by and say thank you for this site… After being an Apple fan boy since the 3G I was a little disenchanted with them and they way that they upgrade their product. So I finally took the plunge and got the GS2 for AT&T… and all I can say is WOW!!! In addition I have been able to root and take advantage of the ROMS that you have. Thank you again.
Rooted att galaxy sII i777 and can’t access my phone files through my PC anymore. Doubletwist doesn’t see the phone either.
Alex
Try clearing cache in CWM and reboot couple times, that should fix it.
I am having a similar problem, just shows removable disk and when I click on it it says please insert disc into drive…
Please help
Tried clearing cache and rebooting several times, no dice
Hi, i”ve had my att galaxy s2 on 2.3.6 rooted now thanks to your tutorial. everything worked fine,i flashed phone bricker, shostock, and batista. i finally got rom manager premium and planned to switch to cyanogenmod so i tried to make a backup. but it just restarted and now my phone’s been stuck on the galaxy s2 I9100 yellow triangle sign for 8 hours now. how do i fix this? i checked out xda developers forum and heard that i should flash CF-Root-SGS2_XW_NEE_KI8-v4.3-CWM4.tar via odin and it should work. but i found this in the international galaxy s2 section of xda developer forum. should i flash it anyway? what can i do ? please help.
try usb jig it will take you download mode
If you happened to be running gingerbread prior and now ICS, you may need to install new drivers as windows will not be able to interpret under old ones. Windows will consider new os as different device yet the same hardware.
Hope it helps.
Hi ,
I have tried to root my att galaxy s2. But to my surprise when I tried to install custom ROM for wifi thering. on the process tried to back up and I was stuck with black screen with a black hat and a gold circle. I even tried to reset my phone to factory restore again I stuck with same screen. Please kindly guide me to restore my phone to factory settings so that samsung will not know that I have rooted my phone. and what is reason for the black screen with the hat. I will try to avoid to next time.
Thnaks
Hi, I came into that same frustration a couple days ago. I got the hat and the orange circle by installing Rom Manager. Forgot what I selected after installing it,but when my phone rebooted, the hat was there. I since learned the home key makes selections and the volume bar moves the selection. I rebooted system and was able to use the phone again.
Hope this helps.
Can you offer an Odin update to CWM? I’ve been trying to flash 5.0.2.6 through ROM Manager Premium as well as manually, and I cannot get it to stick! It stays at 5.0.2.3 no matter what I do.
I’d really like to get CM7.1 running on my phone but it won’t install through CWM 5.0.2.3.
Thanks for all of the hard work, your site is awesome!
I’ve been trying the same thing, gotta be a way?
Do you have plans for providing similar roots and overclocking ability to the newest Samsung Galaxy Skyrocket S2 (i727)?
I would like to know the same information, I bought a (SGH-i727), AT & T, but would like to unlock it and also have access to root, to access more features.
I have the same request of them because i also have a Galaxy S2 Skyrocket (AT&T) SGH-i727 and i would like to root my phone, thanks!!!
hey do we need to install clockwordmod recovery
H/ave you come across any build differences that would cause you to recommend plain jane S2 over a skyocket model?
Curious if you could explain how to instal and use Boot animations for my Galaxy S2 (AT&T)
Buenas noches le instale el Cyanogenmod 7.1 android 2.3.7 en mi galaxy s 2 gt 9100 y se me borro el buckup clockworkmod que puedo hacer para poder regresar a android 2.3.4 que es el que vino de fabrica. Gracias.
I just want to know if the AT&T GS2 supports video calls without using 3rd party app… I noticed International/Global SG-I9100 version does support it. It has a little button on “contacts” under the personal info which allow you to make this happen, however, AT&T version does not…
Please advice!
If you mean does it have a feature like Facetime then no… but it’s certainly supported with 3rd party app’s.
Honestly a video call is always going to require that both parties are using the same software, it’s not that standardized yet (at least none that I’ve seen.) Facetime can’t be used to call your friend on Skype… etc. So even if the GS2 had this built in you would likely only be able to call other people who were also using whatever Samsung included with the phone.
Speaking of Skype…
Can i use the same downloads and roms as the sgh-1777 to root my sgh-1727? Thanks!
hi i have a problem about phone call. I accidentally erased some apk file in system using root explorer and
after that, i can’t make a phone call. When i call the other phone, I cant hear what the opponent says or the opponent can’t hear what i say. i made backup file after i rooted, but its erased it too. Is there any way that i can get stock firmware for sgh-i777 uckh7 so the phone can become like the first time i bought it? (I tried factory reset, format usb storage, unroot)
nvm i fixed it. I played around with it for like 7 hours and somehow its working now..
How did you fix yours? I am having the same problem.
hello there… i have the same problem… please share the solution… software or hardware???…
Hello awesome guy. I rooted my phone yesterday using your instructions. Everything went perfectly. I did a backup and started installing a few roms, including the litening one and had a couple issues with the capacitive touch buttons so I switched back to the stock rooted rom that you included.
Now though, no one hears me on calls and I can’t hear anyone either. BTW my phone is the AT&T i777. Help?? The mic and speaker work though with skype and the cam app.
I am having the same problems as David.
Hey, just thought I would give you some direction with your problem you are having. I would check out this post in XDA developers forum: http://forum.xda-developers.com/showpost.php?p=18859438&postcount=199. I did a lot of reading in there and several people were having similar issues. Check it out and it should be pretty straight forward for you. I think basically the people really had to reflash the modem to get it working again, but I would just use the procedure in the link to go back to stock+root no BL (boot loaders) to get back to a clean slate and go from there. Hope this helps!
–rhino
After rooting, I can’t access my sd card or my android internal drive. It show as drive: E & drive: F respectively in windows explorer. When I click the drive I get a prompt to insert sd card. I have no choice but to unroot my phone
Hi
I have a question, I have a Galaxy S2 i777 At&t, and I’m using a custom rom, “ICScrewD” and I wanna as if its possible to reset the the product name from GT-i9100 to SGH-i777 in the ODIN MODE? I’ve used the jig but still says i9100..
i mested my gs2 i777. i downloaded android 4.0 from another site but it was the rong one and i didnt notis and now my phone wont get att signal and it wont charg it comes up kernel panic upload mode [ RST_STAT = 0x20000000 ] and i went in to the setings and about phone and everthing is the same exept for the Baseband version is now I9100XXP1 what can i do to get it to work and the baseband verion back to normal?
I’ve got an AT&T Samsung GS2. I’ve decided to return it to stock rom due to issues I was having with some of the other roms I had flashed it with. However, I wanted to keep it rooted. When I returned it to stock I had to update it to 2.3.6. I then rooted it using Zedomax’s kernel. After a factory reset and a reboot I was unable to get the wifi to work. It would turn on, scan for nearby networks, come up blank (despite being 2 feet from a router) and turn itself off. I then unrooted it and updated it again to 2.3.6 and the wifi now works again. I have kept it unrooted for a week or so and everything seems to be going strong. Is there a seperate kernel to root with for 2.3.6 or is it not rootable at all yet? Or is it that when it’s rooted I have to flash a seperate rom to get wifi functionality (sounds wrong but I figure its a possibility)? Any help is appreciated. Thank you very much for your website and the great detail you use to assist those of us unfamiliar to this platform.
i just figured it out… before you start the rooting of the device, shut off the wifi…. after done rooting turn it on and it should work….i had the same problem but i just did it and it work like a charm
If already rooted, did you have to unroot then root again following your instructions?
I rooted mt att galaxy s2. the phone booted normally, but my wifi is not working. It won’t find any of my wifi’s. What should i do
I was able to root my galaxy s2 on att., now i have no wifi connectivity. What can i do to fix this
Please, mas SGS2 stuck on the “kernel panic” and don’t do anything else anymore. Someone know what i can do? Its crashed while i was updating, my usb have gone off and then mey cel had died. Please.
hi does anybody know if the i777 is getting the ice cream os update? if so when? also is there a custom rom with ice cream os integrated? thank you jasmine
I have a Galaxy S 2 from ATT and their service sucks BIGTIME!! Due to the extreme circumstances I may be able to keep my handset after cancelling out my contract so I want to switch over to T-Mobile and use this handset.
QUESTION: Can I root my ATT Galaxy then install a T-Mobile rom to make the phone compatible in all ways of T-Mobile service?
Hi! Just found this page and I think its awesome!! Guys I bought an AT&T GSII with ANDROID 2.3.6. and KERNEL 2.6.35.7. I want to root it to be able to install titanium Backup and freeze the tether manager, however, the instructions I found here apparently are only for ANDROID 2.3.4, so my question is, do you have an alternative for 2.3.6 yet or know where to find it?? thanks so much for your fast response and again congrats on your webpage!!
I followed the guide here and then loaded clock work recovery for Galaxy S2 AT&T and tried to do a rom backup.
Now I am stuck in clock work recover – if I hit reboot system now I just see the clock work recovery icon with a circular arrow under the hat.
Need some help
I saw you had the BLN app in one of your videos, so I was wondering, if I were to flash a BLN kernel, over this Overclocked 1.6Ghz kernel of yours on my SGS2 i777, I will go back to run at the stock 1.2Ghz?
Or is there a BLN kernel you know of, that runs on 1.6Ghz, on the SGS2 i777 AT&T?
Please let me know and maybe email me the link, if posssible
Much appreciated, my frieend ( I used your instructions to root my device, and it worked like a charm…ur a lifesaver)
HELP-HELP-HELP
I just got my att samsung skyrocket unlocked and my problem is,
I cant get 4g data in my from from t-mobile only edge
Please, Help
I mean it, HELP!!!
Thank you So muh!
Sadly, i have the same issue with my Atrix 4G and you’ll have it until you buy a phone from T-mobile. I’ll explain so you know what’s happening. Don’t worry, you didn’t mess-up your phone or anything, this is a hardware issue, not a software one. The reason why you’re getting EDGE, and will ONLY get EDGE, is because AT&T and T-mobile operate on different frequencies and each phone have chips on their boards to make them operate on THAT frequency alone. The only frequency that’s in all chips is the frequency to speeds at 2G as to maintain the global operation of the phone, which is the purpose of having a GSM phone in the first place. Hope this helps you understand the situation better for future phones, do have in mind that there are a FEW (very limited) phones that actually have the chips to process both frequencies, look at the frequencies your phone can handle, then look-up frequencies from a phone from T-mobile and you’ll see the 2 missing frequencies you need for that delicious 4G data speed.
Hey….
ICS is coming tomorrow…can i update to ICS in my rooted at&t galaxy s2???? (it now has gingerbread 2.3.4)….
If yes please make a video, how to update it in mac….
I am getting a verification error when trying to flash a rom. Its CM9 ICS what do I do
this website has been very helpful!
i installed the CM9 ROM and has been looping the boot animation for about 10 minutes now. I dont know how long I should wait before I know it wrong, or what to do if it is wrong. Please Help!
I already enrolled in your email for galaxy note cause thats the phone I have. But my brother has the ATT galaxy s2 skyrocket, do you have a site for that? Can I use the same roms for the regular s2? Love your work keep it up thanks.
I rooted, unrooted and rooted again but when I get into CWR and select any option it is blank. I can’t even reboot from CWR I have to do a battery pull. Any thoughts?
I rooted my Galaxy SII, using the non-odin method, running a batch file, everything went smoothly, went straight to Titanium Backup, –that worked fine, everything seemed good until this morning. Plugged it into the wall-charger for the night, discovered at about 4AM that the battery was at 1%, eventually it shut itself off while plugged into the wall-charger.
Now the only way I can charge the battery is to keep the phone turned off, however when I plug it into the USB of my laptop, the charge % goes up instead of down. Something is chewing my battery fast. I have turned off all the applications I can find, GPS, Bluetooth, does not seem to help. Any suggestions?
JONC
(I put this msg in the general GS2 faq in error – here goes once more…)
Hey Max!
I just installed the leaked I777 UCLC2 ROM, and e’thing appears to work OK, except for some out-of-place notifications.
Now, of course, we are again standard AT&T/unrooted. Do I need a special ICS 4.0.3 compatible kernel, or can I use your old Zedomax kernel – in .tar format – as was used when rooting 2.3.4?
All the UCLC2 compatible CF CWM kernels I can find are in a format that I don’t know how to flash…..
I tried to unroot the cell, it gave error and said ” FAIL ”
then i had restarted the phone , when it was in download mode….. now it says
” firmware upgrade encountered an issue. Please select recovery mode on kies and try again ”
please help phone is not starting and kies is not helping me out !!!!!
hey, i rooted my sgh i777 using the zetomax method, then flashed the leaked ics to the phone, loved it but phone was overheating, so i unrooted back to 2.3.4 using the method provided, now i cant get kies to connect to my phone fot anything, can anyone help please, i need to update back to 2.3.6. but cant and ota failed for some reason, please help!!
I just rooted my SGH-1777 using this method and when it rebooted it just stays at the GT-I9100 screen with the yellow triangle. it wont go past the screen. i can however go into download mode. i need help to get past this screen and have my phone working properly please.
I am having the same issue. I have SII att and I think I rooted using superoneclickv2.3.3 is working good for the past few months. My friend bought SII att and I am using zedomax kernel now I am stuck with android word after the triangle. Please help.
I have done the same thing I’m afraid you may have to go into recovery mode then wipe the data from your phone then if should work properly
just flash siyah kernel over it, should work fine, I don’t support my kernels anymore as I don’t have time for development.
I am trying to figure out how to use a notification that I have in my files to use a battery low notification.
How to use a music clip to tell me my battery is low? Any help would be greatly appreciated
hi..please help me…i wish to buy samsung galaxy s2 I777 at & t…on ebay ….it clearly mention it is preloaded with ics4.0…so i wish to ask wether it is official or it is custom rom…becoz i think officially ics 4.0 uodate not yet get???
I have an att galaxy s2. I did the thing that I saw from this site on how to root it with the kernel and all that then I installed a cyanogen mod 7. It will not let me uninstall it in recovery mode that is the main Tom now and I have a different kernel that the original. I NEED to know if it is possible to change my Roman back to the original one then I need to know if I can some how get the original kernel back on her
Thanks Foodmaster
Please Help,
Samsung Galaxy S2 I777 (AT&T version)
I got my phone rooted and Wifi is not working my data consumption is going high.
Android Version 2.3.6
Kernel 2.6.35.7_ZedomaxStockKernel
Build number Gignerbread.UCKK6
I rooted my At&t galaxy s II using your method and lost my wifi capability.
i used u r method for rooting…it works well. but after that lost my wifi functionality. not able to detect any wifi spot….
Looks like big issue to me…please help…
Android Version 2.3.6
Kernel 2.6.35.7_ZedomaxStockKernel
Build number Gignerbread.UCKK6
I have the same issue… no wifi…. and his one solution didn’t work, to flash with the file DD_03072012.tar
Jan 16th by QUADS
Its a kernel issue, i rooted using this kernel 2.6.35.7_ZedomaxStockKernel and then applied fix from another kernel my Wi-Fi issue was resolved. I had posted the link to kernel to resolve the issue… but i guess the admins deleted my post
Can you please repost which kernel you flashed to get the wifi going again?
I am stuck on my SGH-i777 with Galaxy GT-9100 with 2.6.35.7_ZedomaxStockKernel – no wi-fi (the wi-fi scans for network connections but does not detect any and goes in to the dim screen mode).
Please help.
hi, i downloaded the Batista Rom for my Galaxy s2 ATT but now i cant reboot into clockwork recovery mode or whatever,
i hold down the home and power and volume up keys and i just end up in the lock screen like i rebooted normally. i have an app called cwm that says it will reboot me into clockwork recovery mode, but i cant do anything with that cause it is not the right thing some how. it let me wipe the phone, but when i tried to load the new ics rom, it wouldnt run!
now my phone is totally non functioning and i dont know why i cant just load the new rom that i loaded on my sd card. please help! how come my cwm looks so different!
Wifi is not working… Please help… it switches on and tries to scan for connections and then does not switch on.
Just flash the recent Entropy Daily Driver kernel.
can help for the android to toor
I just rooted my phone and put ShoStock 2.2.4 on there with the 3.0.30 cherrypicker kernel. I am having issues with connecting my phone to kies. It keeps telling me it is incompatible with it due to the debugging mode being active. When I look at that, it is turned off. When I turn it on, it just takes a long time trying to connect, but never actually does. Is there something I am doing wrong, or are other people having the same issues? I really just want to be able to upload my newer contacts list that I had. Any help is appreciated.
Was able to successfully root my phone, and unfortunately have issue with the back and search button not working. Also, I am unable to use the calling features, when I call someone (or vice versa), the speaker and mic are not working at all. I am about to unroot and restore to stock.
If that doesn’t work then I will send it back through warranty. If it does, then it may be some kind of bug or issue with this kernel, I have the same issue with any rom I install. Any advice, tips, or comments on this issue?
Did you find a solution? I have the same issues… I have the AOKP version.
I rooted my AT&T Galaxy S2 using your .tar file but the wifi stopped working it would turn on and then off and not connect to any of my remembered networks. I unrooted but it didn’t fix the problem so I did a factory data resort which fixed it. I would like to root my phone again but will the wifi not work? my phone is running Android version 2.3.4 Kernel version 2.6.35.7 and Build number GINGERBREAD.UCKH7
Thanks
I tried the root and it worked pretty well except for one problem. After the root, when I turn on my camera, it makes some buzzing sound and does not focus well. Is there a solution for this? Thax!
http://forum.xda-developers.com/showthread.php?p=26351829#post26351829
Hi every one,
Please go through abvoe link for full details and help me out to which ROM i need to use for i777..i want to use international
Dears,
Can any please help me in the following problem:
After installation the new MIUI v4 (android 4) on my mobile Galaxy S2 (SGH-T989) I can’t connect it to computer and synchronize it copy the contact, because the computer se the mobile as a new hardware and can’t find the new driver, therefore can anyone help me to fix the synchronize problem.
thanks in advance with appreciation.
I don’t think MIUI is compatible with Kies, if you need that feature, stick with ROMs like Omega ICS, which is off TouchWiz base.
I downloaded and installed the so-called “official” pre-release of ICS for my SGH-i777. It’s now running:
Android 4.0.3
i777UCLC2
I noticed that CWM has a newer version of Android 4.0.4 plus I can take advantage of some of the ROMs. But, the phone now needs to be rooted again and I’ve been searching but can’t seem to find a program to work with this version. Anyone have any suggestions?
Hi Dan, I also installed the “official” ICS on my i777 but it doesn’t run very well, now I wanna go back to Gingerbread 2.3.6! Does anyone have the official att 2.3.6 Gingerbread firmware??
You can try unrooting or flash a rooted stock zip you should be able to find the latter on xda.
Hello!
I was just wondering that if I factory reset my S2 (i777) when I do a rom update, will the phone be factory locked. It would be so bad coz I live in Sri Lanka and there is no way that probably I could get a unlock code…
Tnx.
No, rooting/installing ROMs don’t affect SIM unlock status if that’s what you are wondering.
wow i decided to try out ics again to see if the newer firmware fixes the problem………… nope i cant talk on my phone at all……… im at a complete loss
i seriously think i bricked my phone. now i can barley get past the boot up screen. argh!!!
ok sorry for all the messages im just updatin as i go, so i went into recovory mode and facotry reset from there and all is good accept for the initial problem that i cant recive or call people. now i can call people from skype so that gives me alittle hope that this is fixable and at the same time its weird.
I have a problem with my i777 ATT … whenever install a custom rom to turn off the screen due to inactivity, I have to restart by pressing the power button, anyone know how I can fix this?. thanks
What custom ROM are you using?
muim use, ultimate … with either when the phone goes idle, I have to reboot with the power button pressed …. but with the stock rom that does not happen.
turns off the screen to the 30s and I have to reboot, unresponsive off button. This happens to me all cooked rom.
Not sure, it could be the ROM you are using, try another ROM that you haven’t tried.
I s2 i777 rom download and all the same. could be the kernel with which root, but off the screen due to inactivity, but not responding and I have to reboot with the power button …
Hi,
i think i have the same problem.
do you have a solution??
I just got an AT&T SGH-i777. I use Consumer Cellular for a provider. I followed your instructions for rooting without problem. I’ve tried loading task650-aokp-Build-36, miuiandroid_I777-2.5.11, Phone-Bricker-v2.5, and XWLP7-SHOstock2-v2.2.2. They all go into a boot loop. What am I doing wrong?
Next time you end up in a bootloop, first try rebooting once, if that doesn’t boot in 3 minutes, go back into CWM and clear cache and dalvik cache then reboot. 99% of time this will fix the bootloop issues.
Hey i have an AT&T Sumsung galaxy s2- 1777 i guess. I unlocked it online with Onid i guess, And my wifi wont come on for some reason. if i click on it, it just goes off by itself in 10 seconds. Why am i seeing this problem? How can this be solved? Would really appreciate if you could help me out.
Worth a try:
I also have an SGH-I777, rooted, ICS 4.0.3, and it was doing the same thing yesterday; but only at home!
After I rebooted the DSL modem and the router normal behavior was restored.
Wifi not working after rooting from this procedure. Tried different methods suggested in these posts. Rooting using this procedure is not worth.
Hi
I have a question, I have a Galaxy S2 i777 At&t, and I’m using a custom rom, “ICScrewD” and I wanna as if its possible to reset the the product name from GT-i9100 to SGH-i777 in the ODIN MODE? I’ve used the jig but still says i9100..
Hey i try rooting my phone but it said it failed and now its stuck in Firmware updrade encountered an issue, please selest recovery mode in kies & try again but kies cant find it
just try again thats same as download mode.
It keeps failing I think it is because it is 2.3.6 not 2.3.5 xD i need to downgrade it
Hello!
Does any one have a idea why this is happening. As u can see, the left side strip is not responding to touch and I didn’t even drop my phone. The phone is a at&t i777 s2…. plz help…
i suspect defective screen but u can try unrooting to see if its not.
hey i have galaxy s ii i777 and i have rooted my phone using StockZedomaxKernel. i try to flash ics rom, but it doesnt work. after i reboot my phone it shows only screen. even if i switched of it and on again it shows the same can any one help me here
Try flashing another kernel.
I have an ATT GS2 Skyrocket. it is unlocked and running on T-Mobile. i have Juggernaught 5.0 running and and sky- kernel 010u running and telus sgh t989 antenna software to allow me to access t-mobile’s 4g. I cannot get the hotsopt to work. I have tried everything i can think of. I have tried every version of wifi teather that exsist and every setting for each version. I have tried using quick settings and still the wifi hotsopt will not work. I cannot thing of anything else to try. please help. i am totally at a loss.
Awesome site. Flashed with new ice cream per use site.
Thanks
Question:
At&t galaxy s2 rooted & unlocked using T-Mobile.
Only able to access edge network data. I see ur site shows how to enable 3g 4g on At&t galaxy note.
Is there anyway to enable on my At&t gs2?
Thanks
Not on the I777 it has exynos cpu and doesn’t support t-mobile 1700mhz band.
Is it a sky rocket? If so you need to put a TMobile gs2 rom on your Att gs2 I use juggernaught (I know I’m spelling it wrong) then install t mobile antenna software on it. I use telus you also need a kernal that will support the ROM and antenna software. There is a tutorial but it’s a pain to understand it took me a week to get it all right. Before you do anything tho try going to your dial pad and type *#2263# then go to WCDMA band… Then select 1700 that’s t mobiles 4g frequency selecting that should lock the phone to 4g but you will have to change it back to automatic when you are not in a 4g area.
Could do an review of the rom pure look s3? Please
Could you do an review of the rom “pure look s3″?( espically the AT&T s2)
I recently bought an at&t sansung s2 (samsung-sgh-i777)…….what i’ve noticed is that after playing some selected games for over apx. 15 min……tha area near the camera gets incredibly hot…..is this alright???
It gets normal after laying it aside for 10 mins………….PLEASE HELP!!!!!!!
Good day/night
I have a sgs2 i777at&t with (shostock2 3.0.5) rom and the modem (ucld4) that it cums with sucks I’m trying to install/flash uclc5 modem on my device without bricking my phone can you please help me flash the uclc5 modem on my i777 shostock2. And is it possible to flash it without Doin a full whip?? Thx u in advance.
what is the best modem for i777 shostock2 3.0.5 i currently have modem (ucld4) it sucks midget balls. and i am in Orlando, FL
HELP!!! I installed shostock rom that worked well for sometime….however yesterday when I went running, I was listening to audio and at the same time I was using an app called Mapmyrun, The phone then suddenly just died. No matter what I pressed it wouldn’t come on. Eventually it did come back on after I pressed the volume up button along with the power button and the home button together and at the same time putting the battery back in. Since then I can’t make a call without using the speaker and while trying to play audio, the audio sticks. I decided I needed to reinstall rom or even try a new one but discovered the phone will not boot into clock work mod. When I try the phone just goes dead again and I then have to do the whole volume up button along with the power button and the home button together and at the same time putting the battery back in again. How do I get CWM again so I can wipe?
If I rooted the gs2 from at&t could I use it on a virgin mobile account?…Help please!!!
Hello I have a sgh-i727 ( att samsung skyrocket) im rooted with 2.3.6 base rom. My problem is i’m trying to change boot animation on my phone I have rom toolbox pro and tried to change the animation there but whenever my phone restarts it still has att logo does anyone kno how I can make the att logo go away. Also im not that tech friendly with phones when it comes to files. I would like a step by step if that would be okay…thanks in the advance
Why are some of the videos unavailable? I am new to rooting and installing ROMS. But not all the videos are working and this looks like a very good guide?
Not all the videos are working?
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i am using a galaxy s2 i777 at&t. the big problem is the tts. it reads my text msgs. i tried all possible way to stop it but it reads ..and app or permanent solution for this pls help me.
I’m not sure if this belongs here but is there a ics rom that has touchwiz (gs2 or gs3 kind) and an ics navigation bar or is it possible to add a navigation bar to the stock rom?
I rooted my at&t gs2 i777 and flashed foxhound ics rom. My phone now shows gs2 i9100 on boothing/re-boothing. Can i flash a new rom meant for gs2 i9100? Or i must stick roms only meant for at&t gs2 i777? Please, help!
i root my samsung galaxy s2 (at&t)by kernel siyah-v3.4.2 and i put mystic glory4.1 rom in it .now its not booting or starting .need help urgent plzzzzzzzzzzzzz when i press power key its show samsung galaxy2 GT-I900 WITH yellow triangle after that its show blank screen .. max plzz fix my phone i will pay you also if you want just fix it plzzzzzzzzzzz .i can mail you my galaxy s2 also
NFC for I777? Available?
I just did the update and after the initial start up, my screen goes black and nothing happens. I need help ASAP!!!
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Hi,
I’m using AOKP 7.3.2012. I’m looking for a JellyBean custom rom and I would like to try cMIUI, but i’m afraid to hardbrick my phone due to the emmc bug which affects some Samsung models including mine (sgh-i777). Do you know if the kernel on AOKP 7.3.2012 is safe. If not which one do you recommends me?
Thanks in advance,
Ramon
Not on i777, the EMMC brick bug is really only happening on GT-N7000.
So you think I can move to any other custom rom and wipe data without problems?
yes
Good stuff, thank you for this. As a contractor this really helps keep me fresh…. Thanks Again…
I’ve been running an ICS rom for several months. I would like to try some JB roms, but realiize I would lose all the apps and data like texts and call history if I do. Is there a way to transfer those things to a new rom install?
Hey Bro thanks for all you do I have a unique situation i think My GS2 when plugged in will loose data connection i unplug wait a few it works again ive tried all types of stuff and nothing seems to every work. i unrooted and now it will charge but if left on charger long enough to charge completely it will eventually loose data as well. so odd!!!!!! every seen any thing u would do or know to do!
Greetings-
I’m running the AOKP JB (10.28.12) ROM and I noticed two issues:
1- Contacts crashes whenever a call is made or answered. I can make a call but when done it’ll say Contacts has stopped working.
2 – wifi won’t connect at all. I know it’s not my router, it’s definitely an issue with the device (ROM) I believe. It worked when I used AOKP’s ICS ROM but not now.
Any ideas why this may be happening and if so, how to repair it?
Since I was already using AOKP JB ROM I updated to newer version via OTA download and clearing the cache’s not a full factory reset. I also installed newest GApps file as well.
Thanks in advance for any assistance!
Nataswon
Hey, okay so i followed your steps on rooting and it was successful. However, my wifi is not working. i tried to follow the steps on how to fix it and i just dont understand what its talking about. send me a link of a video on it or somthing?
Thanks.
Hey, okay so i followed your steps on rooting and it was successful. However, my wifi is not working. i tried to follow the steps on how to fix it and i just dont understand what its talking about. send me a link of a video on it or somthing?
Thanks.
Hi Max,
Is there a way to stop AT&T from trying to update my phone? I am afraid it will cause problems with my rooted phone. Thanks for you instructions on how to root. They worked to perfection.
Thanks, B…
It is perfect time to make some plans for the long run and it’s time to be happy. I have learn this put up and if I may just I wish to recommend you few fascinating issues or advice. Maybe you can write subsequent articles referring to this article. I wish to read even more things about it!
I have the Supernexus build 4 on my phone, and had the latest gapps.. Phone was working completely fine, until yesterday when my phone won’t start any applications, so I decided to reboot. But not the phone is stuck on the X for hours. It won’t start. I’m able to go into recovery mode though.. Is there anyway I can get it to work??
Please reply ASAP
PLEASE HELP!!!
After rooting my ATT Samsung S2 the camera always has a black screen. It does still take pictures, but I cannot frame it with the black screen.
Thanks
Barry
mine does the exact thing. Any help would be great!!!
After all, the mobile launches a black screen flash ABERRATION which comes and goes randomly, and that was that! My mobile was already rooted and I was using AOKP rom.
Is there some special part that I’m missing?!
i have rooted my phone but it is not opening nothing is showing….CWM is only showing. what should i do?
Hey Max, I unrooted my S2 i777 to the original ICS rom.. But when i connected the phone to the charger the phone keeps on restarting.. But luckily i was able to go to download mode.. I rooted it back and tried the Ressuruction remix 4.2.1 version rom.. It worked perfectly..
But then when i flashed the ShoStock3 JB ROM V1.8.5 the previous problem started again.. It just keeps on restarting… It was the first Touchwiz rom i flashed in ages.. I tried changing the battery n USB cable and still the problem continues.. Any idea whats happening?? ANy idea ow to solve this?? your help would much appreciated..
All AOKP Roms work but not the TouchWiz Roms
Greetings –
I had that issue with the screen flashing and other annoyances. I was on AOKP but moved to Resurrection Remix.
Similar issue still occurred until I flashed SHOStock 3 JB v1.8.5 just last night. Amazing ROM, and as of yet no more issues when charging. Yes, it hasn’t been a full day yet, but thus far I’d suggest trying SHOStock 3 JB v1.8.5
Why are there no Galaxy SII i727 roots?
hey do we need to install clockwordmod recovery plz reply
Hello, I’m using the rootbox rom v3.6 with ajk 1.21 old mali kernel on my sgh i777 and for some reason everything but the wifi works. I know the wifi is working overall because I’m able to use my laptop and ipod with it. If you have a solution to this problem I would greatly appreciate it.
P.S. this isn’t the only rom I’ve had this problem with in this day alone I’ve tested just about all kinds of roms all having wifi problems.
On another side note the problem just occured and wifi was working this morning. I guess I should have stayed on previous roms and not got spoiled with trying new ones 0.o
do you need an sd card to root?
Max,
I followed your instructions to Root my AT&T Galaxy S2 i777 (4.0.4 – i777UCLL6) using Odin3 v1.85 and Siyah-v3.4.2-nomswap-I777.tar. When I run Odin I get the error message “Odin3 Communicator has stopped working”. I’ve tried on multiple Windows 7 Computers and get the same error. Any idea of how to get around this error? I want to Root and Use a Custom Jelly Bean Rom. I’m tired of waiting for the AT&T Jelly Bean update and also want to get rid of the AT&T bloatware. Has anyone experienced this error and corrected it?
I have the Galaxy S2 thru Straight Talk – I think it runs on the AT&T network. The model is SGH S959G with Android version 2.3.6 I have been unable to find any roots, updates, etc to get this to the 4.x Android systems. Do they exist or is that not an option for these phones. Thanks for your help.
See here for Straight Talk Galaxy S2 instructions:
http://forum.xda-developers.com/showthread.php?t=1982571
HELP!
I thought an unlocked phone would be enough to do what I wanted to do. AT&T Galaxy S2, unlocked using T-mobile. I can’t get the hotspot to work. Apparently I have to root. But then what? I haven’t tried it yet because I’m afraid that will lead to a bunch of other stuff that’s beyond my knowledge/skill level. I’m entirely new to all of this and only figured out the root part through lots of research! Should I bother, or just give it up and get a proper phone?
Thanks
Try this for getting hotspot to work:
http://highonandroid.com/android-apps/how-to-wifi-tether-any-rooted-android-smartphone-or-tablet-universal-guide/
Max,
I have a GS2 att phone that has to run gingerbread for work apps. I did you root with no issues. Your instructions are great. I have noticed an issue where my phone is going into Airplane mode and gets stuck there. Have you heard of anything like that? I have to remove battery and power back on then reenable via settings.
hi, for some reason yesterday my phone battery died, so I put it in charging and nothing happened. The battery showing it’s charging isn’t popping up? any reason why?
I have a Att gs2 sgh-i777 on straight talk. After I rooted phone and installed shostock3 all work fine but I can’t get data. Wifi receiving calls and texts works fine, just no data. Can someone please help me fix this issue.
I have a S2 SGH-I777 and I was trying to download Jelly Bean 4.1.2 but I dont know how to download it. I tried google it and trying to find a downloadable source but i could not. Do i have to download it on a computer and then copy it onto my device, or do i have to download it straight onto my phone?
Please I need help.
Thank you.
Hi Max,
Since AT&T just released JB 4.1.2 for the Galaxy S2 I777 will you be making a root available for it.
Thanks!
Frank
how to root unlocked at&t s2 with jb 4.1.2?
thanx