Samsung Galaxy S2 GT-i9105 can now be updated to Android 6.0 Marshmallow via CyanogenMod’s CM13 custom ROM. CyanogenMod are the best after market Android developers. This ROM is in the development stage so it not advisable to use the ROM for daily run. It is just for the experience of Android Marshmallow on your device.Samsung Galaxy S2 Skyrocket

So, if you are curious to experience the Android Marshmallow on your Samsung Galaxy S2 then your ar at right place. You can get the ROM from the official Cyanogen website or from the link provided in the description.

Preparing your Phone

  • This instructions are strictly for Samsung Galaxy S2 SM-i9105, so do not try it on any other device or you may brick your device.
  • Device should be fully charged.
  • Install Galaxy S2 USB drivers on your computer.
  • Back up all the required data to some safe storage.
  • Make a Nandroid back up of the current ROM.
  • Make sure the device bootloader is unlocked.
  • Root your device and install custom recovery  on it.
  • Enable USB debugging mode of your device. Go to Settings > Developer options > USB debugging mode.USB Debugging

Download and Install Android based CM13 Custom ROM for Samsung Galaxy S2

  1. Download Android 6.0 Marshmallow based CM13 custom ROM from here.
  2. Download the Google App’s for Android Marshmallow from here.
  3. Connect the device to computer and transfer both the files i.e ROM file and Google App’s file to your device root storage.
  4. Disconnect the device and turn it off completely.
  5. Reboot the device into recovery mode, press and hold Volume Down + Home + Power key for few seconds.
  6. When in recovery mode tap on Wipe tab and select the options you like to wipe, given under it.
  7. Now, confirm the wipe action by swiping the button at the bottom of the screen.
  8. Now, return to main menu and tap on Install tab.
  9. Locate the ROM file stored on you device and select it.
  10. Swipe the button at the bottom to flash the ROM file on your device.
  11. In the same way flash the Google App’s on your device.
  12. Return to main menu and tap on Reboot.
  13. System will now reboot in normal mode.
  14. That’s all you can now check the device Android version in Settings > About device > Android version.