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How to install Android 4.1.2 Jelly Bean Avatar ROM on Galaxy S2 I9100

Samsung Galaxy S2 has recently received CyanogenMod 10.1 update based on Android 4.1.2 firmware. CyanogenMod ROMs are for being high-customizable on top of being light and feature-packed. Another group of developers are into making things a lot better than they already are; the group built the Avatar ROM that offers even more ways to customize user interface and brings additional features on top of Android 4.1.2’s and CM10.1’s features.

Owners of Samsung Galaxy S II are lucky enough to get. If you are one of the people who often flash new custom ROMs, then the tutorial below is definitely for you.


  1. Important data should be backed up prior to taking the first step of the tutorial below. This will ensure you can restore them later when things happen unexpectedly during the process.
  2. To ensure you cannot brick your device, check if it has at least 75% battery left. That should be more than enough to get powered on during the entire process. If you can fully-charge it, then that’s better.
  3. Enable USB Debugging and install all necessary drivers so your device can properly be detected by your computer. You will need to copy files from your machine so it is imperative there is a good communication between them.
  4. Device must be rooted and ClockworkMod Recovery is installed. Flashing custom ROMs into the device needs root access while CWM Recovery is the more recommended tool to flash this ROM.
  5. This tutorial is intended for the international variant of Samsung Galaxy S2 with model number I9100. Flashing this firmware to other models is not recommended.
  6. The instructions provided below are for informational purpose only. You can never hold The Droid Guy liable for damages your device may incur resulting from the flashing of Avatar ROM. Flash at you own risk.

Installation Instructions

Step 1: Download these files and save them in your computer to be copied to your device later: Avatar ROM and Google Apps.

Step 2: Connect your phone to your computer using the original USB data cable and copy both packages into the root directory of Galaxy S2’s internal memory.

Step 3: Disconnect and turn the device off.

Step 4: Boot your phone into recovery mode: press and hold VOLUME UP, HOME and POWER buttons.

Step 5: It is advisable you make a Nandroid backup of your current ROM so you can revert later in case you don’t like this ROM: Backup and Restore => Backup.

Step 6: Now fully wipe data: Wipe Data/Factory Reset => Yes. You will also need to wipe cache partition and Dalvik cache by going to ‘Advanced Option’.

Step 7: You are now ready to install the Avatar ROM: choose Install zip from SD card => Choose zip from SD card and browse through your device’s internal memory where you can find file.

Step 8: Repeat step 7 but this time around, choose Google Apps package instead of the custom ROM.

Step 9: When both installations are complete, choose Reboot System Now from the main menu and wait until your device is fully active and responsive before you use it.

You can now customize your device according to styles you like the most.

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