AT&T Galaxy S2 SGH-I777 Android 4.4.2 Update Now Available via SuperNexus ROM

   Known Issues/bugs

[As of January 2, 2014]

• No known issues yet.

Let’s see how to install the latest SuperNexus ROM on your AT&T Galaxy S2 (SGH-I777).

  WARNING!

Warranty may be void of your device if you follow the procedures given on this page.

You only are responsible for your device. We won’t be liable if any damage occurs to your device and/or its components.

  AT&T GALAXY S2 SUPERNEXUS ROM INSTALLATION

If your android device powers off due to lack of battery while the process is underway, it could damage the device.

So, make sure your device is adequately charged — at least 50% battery of the device.

   STEP 0: CHECK DEVICE MODEL NO.

To make sure your device is eligible with this, you must first confirm its model no. in ‘About device’ option under Settings. Another way to confirm model no. is by looking for it on the packaging box of your device. It must be SGH-I777!

Please know that this page is meant only for AT&T Samsung Galaxy S2, model no. SGH-I777. Please DO NOT try the procedures given here on other variants of the Galaxy S2: GT-I9100/Sprint Galaxy S2/Verizon Galaxy S2. Also, do not use the procedures discussed here on any other Galaxy device or any other company. You have been warned!

  STEP 1: BACKUP YOUR DEVICE:

Back up important data and stuff before you start playing around here as there are chances you might lose your apps and app-data (app settings, game progress, etc.), and in rare case, files on the internal memory, too.

For help on Backup and Restore, check out our exclusive page on that linked right below.

► ANDROID BACK UP AND RESTORE GUIDE: APPS AND TIPS

   STEP 2: INSTALL THE LATEST CWM RECOVERY

 Skip this step if you already have latest version of CWM recovery installed on your device.

Make sure your device is rooted and CWM/TWRP recovery is present. Without the above requirements you will not be able to install the SuperNexus ROM.

  STEP 3: INSTALLATION INSTRUCTIONS

  DOWNLOADS

Download the files given below and transfer them to a separate folder on your phone and remember the location.

  GAPPS FILE

DOWNLOAD LINK | File name: gapps-kk-20131209.zip (93.13 MB)

  ROM FILE

DOWNLOAD LINK | File name: SuperNexus-4.0-i777-BUILD1.zip (159.7 MB)

For latest version of the ROM available, you can check out the original page here→

Be sure to transfer the ROM, Gapps and patch files you downloaded above to your phone and remember the location of the files. You will need to flash them now on your device using CWM.

  GUIDE FOR CWM RECOVERY

  Example video: If you haven’t used CWM recovery before to install a .zip file of a ROM or anything else, then we suggest you first watch a video of that to get familiar with the process. Click here to watch the video

1. Boot into recovery mode. For this:
   • Power off your device and wait for 5-10 seconds until the device is fully switched off.
   • Press and hold Volume Up + Home + Power button together and release them as soon as you see the SAMSUNG GALAXY S2 SGH-I777 logo.
     └ In Recovery mode, use Volume buttons to navigate up and down between options and use Power button to select an option.
2. Create a Nandroid Backup from recovery. It’s optional but very important to do, so that in case something goes wrong you can restore to current status easily. For making a Nandroid Backup, go to Backup And Restore » Backup.
3. Perform a Factory Reset (this will delete all apps and their settings and game progress). For this:
   • Select Wipe data/Factory reset, then select Yes on the next screen to confirm factory reset (screenshot)
4. First Install the ROM file:
   • Select Install zip » Choose zip from sdcard (or external sdcard, you know where your files are) » browse to the location where you saved the file and select the ROM file
     
5. Now similarly flash the Gapps file.
   └ Make sure to first flash the ROM file and then the Gapps file.
6. Reboot your device. For this, go back to the main menu of recovery and select reboot system now.

  GUIDE FOR TWRP RECOVERY

1. Boot into recovery mode. For this:
   • Power off your device and wait 4-5 seconds after lights go off.
   • Press and hold Volume Up + Home + Power key together and release thePower key once the SAMSUNG GALAXY S2 SGH-I777 logo appears, but keep holding the Volume Down key. You will be in Bootloader mode now.

   └ In recovery, use Volume buttons to navigate Up and Down between options and use Power button to select an option.

2. Create a Nandroid Backup from recovery. It’s optional but very important to do, so that in case something goes wrong you can restore to current status easily. For making a Nandroid Backup, go to Backup » and select all check boxes and swipe on the Swipe to confirm option at the bottom of the screen to confirm backup.
   
3. Perform a Factory Reset (this will delete all apps and their settings and game progress). For this:
   • Tap on Wipe » then at the bottom of the screen do a Swipe on the ‘Swipe to factory reset‘ option (screenshot).
4. Also perform a ‘System format‘. For this:
   • Tap on Wipe » tap Advanced Wipe » tap System to select it » then at the bottom of the screen do a Swipe on the ‘Swipe to wipe‘ option.
5. First Install the ROM file:
   • Tap on Install » browse to the location where you saved the files and tap on the ROM file. Now at the bottom of the screen, do a swipe on the Swipe to confirm flash option to begin flashing.
     
6. Now similarly flash the Gapps file.
   └ Make sure to first flash the ROM file and then the Gapps file.
7. Reboot your device. Go back to the main menu of recovery and tap on Reboot » then, tap on System to reboot your phone

That’s all. Your phone will now reboot and it will take some time as it’ll be phone’s first boot after installing SuperNexus ROM, be extremely excited for this!

Note: In case your device gets bootloop (stuck at logo while rebooting), just do a factory reset (step 3) and you will be fine.

FEEDBACK US!

It was easy to install the latest SuperNexus ROM KitKat 4.4.2, right? Let us know about the SuperNexus ROM experience.

Your suggestions and queries, if any, are most welcomed!