Express Pre Requisites:
- Since this is a custom ROM firmware, you need to root the device before proceeding, with the help of below two links you can easily root your Galaxy S2.
- To check whether the device is rooted or not, download the “Root Checker” app from the Google PLAY Store and check the same.
- Backup all the data in your Galaxy S2 GT I9100 so that just in case if the data gets corrupted / lost, the same can be restored. Since KIES doesn’t detect the device in the custom ROM firmwares, don’t use KIES to back up the data. With the help of below steps back up the data. Move all the target backup files in your computer.
SMS – Use “SMS Backup & Restore app”,
Contacts – Sync with the Gmail application,
Call Log – Call Log and Restore
Images, Songs, Videos, Files – Copy to internal / External SD Card,
APN and MMS Settings – Note down from the path “Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names”
- Minimum battery life should be a minimum of 50% to avoid device from turning Off in the middle of the update process. Turn off the antivirus applications in your Galaxy S2.
So assuming that you have followed all the instructions mentioned above, you now need to head to the next page where we have summed up the detailed instructions on how to update.
Video Tutorial for this Update :