Update Galaxy S2 I9100 to Android 4.2.2 Carbon Jelly Bean ROM

Samsung can have another of its models installed with a very good custom ROM. Android 4.2.2 Carbon Jelly Bean is the one to perform this task.

And the phone on which you get to experience this tool is Galaxy S2 I9100. After updates are received, the small bugs you may notice as soon as you install the custom ROM will go away.


The guide will do as you want only if the pre-requisites following shortly will be observed; and they sound like this: root the smartphone, install USB Drivers, make backups, and GApps pack,available here (choose the file called gapps-jb-20121212-signed.zip) and turn on the USB Debugging of I9100.Galaxy-S2-I9100

Important instructions

  1. Step one needs the following actions to be performed: plug the handset to your laptop after the 2 files are downloaded on the latter. Now the files need to be transferred from the computer to the root directory of the memory card. When the transfer ends, you have to unplug the S2 GT-I9100 from the laptop.
  2. Switch the handset off, then enter it in ClockworkMod Recovery Mode. Now make a NANDroid backup using this guide; this should be done in case the custom ROM doesn’t function properly.
  3. For the step with the number three you need to click Factory Reset/Wipe Data and opt for Yes; the phone will now go through a full data wipe sequence.
  4. At the end of that task you have to select Wipe Cache Partition from the CWM Recovery Main Menu. Now tap Wipe Dalvik Cache and opt for Install zip from SD card.
  5. For step five your task is to select Choose zip from SD card and go and find the Carbon ROM file; when you spot it, opt for it with the key for Power.
  6. [sc name=”banner-jos”]The sixth step has you do the following: say Yes when you are asked to confirm the installation of the tool. Repeat step four from “opt for Install zip” onward, step 5 and this one, but select the Google Apps file instead.
  7. Tap Reboot system now when you’re in the Main Recovery Menu. The Galaxy S2 I9100 will start to be updated with the Android 4.2.2 Carbon Jelly Bean ROM. Should you want to see it, it’s in the “About phone” section of the device. If, in any way, you want to experience the old ROM, you can do so; here’s how: boot the smartphone into Recovery, opt for Backup&Restore and choose the appropriate ROM from a list that will come on-screen.