Update Samsung Galaxy S2 to Android 4.1.2 Paranoid Jelly Bean Custom Firmware [How to Install]

Samsung Galaxy S2 owners can now install Paranoid Android 4.1.2 JZO54K custom firmware. The ROM can be installed on the international variant of Galaxy S2 only if the device has custom recovery installed, and the phone should be rooted. This is not an official firmware, but a custom ROM with stock Android.

IBTimes UK will not be held responsible for any damage to your device. Interested users are advised to proceed at their own risk. The ROM and procedure are compatible only with Galaxy S2 carrying model number i9100.

Requirements: Ensure that you have installed USB drivers for the Galaxy S2. Enable USB debugging and ensure that your phone's battery has a charge of at least 80 per cent. Make sure that you have backed up all your data. Ensure that your Galaxy S2 is factory unlocked.

Check out the procedure to install the Android 4.1.2 Paranoid Jelly Bean custom firmware on your Galaxy S2:

Download Paranoid Android 4.1.2 JZ054K and Google Apps on your PC
Connect and mount the Galaxy S2 USB memory on your PC via USB cable
Copy the ROM zip file and Gapps file to your device's SD card
Turn off the phone and enter into recovery mode. To do so, press and hold Volume Up + Home and Power keys
In CWM recovery, wipe the data. Scroll to and select flash zip from SD card
Now, select choose zip from sdcard
Navigate to and select the Android 4.1.2 zip file. Tap on Yes to confirm the installation
Repeat the step for Gapps file as well
After the installation, go to +++++Go Back and reboot the device by choosing reboot system now from recovery menu. The phone will begin booting