Samsung Galaxy S2 I9100
Android 4.1.2 JZO54K Slim Bean ROM is available for Samsung Galaxy S2 I9100.

The international version of the Samsung Galaxy S2 (I9100) has another custom ROM released, ahead of the official Jelly Bean update. This new build - Slim Bean - contains Android 4.1.2 on build number JZO54K. The latest build brings several features, which includes the following:

  • Full system language support
  • Fixes default ringtones
  • Backup tool incorporated
  • Multi DPI play store 3.9.16
  • Nav bar icon fixed
  • Fast charger icon fixed
  • A new lock-screen Glowpad icon

Galaxy S2 users looking to update their device with Slim Bean Android 4.1.2 JZO54K firmware may follow these instructions. IBTimes UK reminds its readers it will not be held responsible for damage to device during installation.


  • Download appropriate USB drivers for Galaxy S2 and also enable USB debugging mode
  • This firmware is compatible only with the Galaxy S2 I9100
  • Backup all important data before proceeding
  • Device should be factory unlocked and ClockWorkMod (CWM) recovery should be installed
  • Ensure at least 80 percent battery charge (check battery percentage here)

To Install Android 4.1.2 JZO54K Slim Bean on Galaxy S2

  • Download Slim Bean Android 4.1.2 JZO54K to computer
  • Download Google Apps package
  • Connect Galaxy S2 to computer and copy downloaded zip files to SD card
  • Disconnect device from computer and turn it off
  • Place device in Recovery Mode by switching it on while pressing Volume Up, Home and Power buttons
  • In CWM recovery, perform a full data wipe
  • Navigate to Flash zip from SD Card and press Power button to select
  • Press Power again and select Choose zip from SD Card
  • Using Volume buttons, browse to ROM file on SD card, select firmware and confirm installation
  • After installation, repeat step to select and install Google Apps package
  • After installation, return to main Recovery menu and reboot device; this may take up to five minutes

The Samsung Galaxy S2 I9100 is now running Slim Bean Android 4.1.2JZO54K custom ROM. This can be verified by following this path - Settings > About Phone.

[Source: Team Android]