Manual Update Galaxy S2 GT I9100G with Jellybean 4.3 Android Firmware – Guide

Jellybean4.3Samsung Galaxy S2 GT I9100G Android smartphone users can also be delighted now as even you guys can install the latest Jellybean 4.3 Android OS. Though there is no official firmware update of Jellybean 4.3 release, you can still apply this release from Cyanogen mod team.

So, before you can proceed to the actual set of instructions which will help you update the device, you will need to make sure that you have followed the list of quick pre requisites which are mentioned below;

Quick Pre Requisites:

  • Make sure that you have created a backup of all the data in your device with the help of below mentioned steps, Don’t backup the data with the help of KIES as it won’t help you back up the data.

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

  • Enable the USB Debugging in your Galaxy S2 from the path “Settings > Applications > Development > USB debugging”. Also, the minimum battery life should be a minimum of 40% or else there is a risk of device getting turned Off in the middle of firmware update.

Disclaimer: Follow all the instructions mentioned in this article as if there is any damage caused due to not following instructions then we shall not be held liable or responsible. Just in case if you face any issues then we will try our level best to address the same.

  • As this is the custom ROM firmware, you need to make sure that you have rooted your device. To check on whether your Galaxy S2 is rooted or not, you will have to download the “Root Checker” app from the PLAY Store.

Once you are done with all the above mentioned steps, it’s time to proceed to the next page where we have summed up all the detailed instructional guide which will help you upgrade the device.

  • asnawi

    after installing cyanogenmod 10.2 , my GT19100g android keyboard ( AOSP ) has unfortunately stopped. can you help me?

    • Pradeep Neela

      just clear the cache from the recovery mode and retry the process of update

  • Darius

    After I installed the Firmware and Google Package 4.3, and rebooted it and it appears Cyanogen Mod (with a spinning circle) stuck there. Help thanks.

  • Omar

    Hi,
    i have tried to install the update on my S2. but the update stops after 1 to 2 minutes and it displays and error “E:Error in /tmp/sideload/package.zip (Status 7)”. the version that i have installed is 4.1.2

    • Pradeep Neela

      you need to install the adb correctly in your computer

  • rajabalak

    While I’ve Rebooted into Recovery Mode, I don’t see the “backup and restore > backup” selection per your instruction below:

    5. Inside the recovery mode, create a Nandroid backup of the current ROM. Select “backup and restore > backup.” The saved ROM is stored on the SD card of your handset which can be restored anytime.

    And how to I create a “Nandroid” backup?

  • wilbert rodelas

    i recently update my phone samsung galaxy s2 i9100g to this 4.3 jelly bean and some issue i notice. the external sdcard slot cannot detect by file manager even i install file expert from android. when you take a picture auto focus of camera are not so fast and when you zoom in your picture its difficult because the zoom are not stable, picture are shaking. antutu benchmark only i get 7152 very low. from my previous score 7551 when i used cm-10.1.2. and i want to suggest the can you add for next update that the icon are can be drag and movable and can create a folder.

    thanks and more power..

  • marten

    is it save to do this on gt i9100 (no ‘g’)?

    • Pradeep Neela

      its for i9100g

  • shukri

    update

  • Sandy

    I have a 9100G version device and I think Samsung is not updating these devices to 4.3. So is it safe to update to 4.3 as mentioned above in your post? Is it stable version of 4.3?

    • Pradeep Neela

      no, its not safe to apply this update in i9100 variant as it may brick the device

  • Sandy

    Is this a stable version of 4.3?

    • Pradeep Neela

      not cent percent stable but its quite stable

  • Juan Castro

    Hello, I have the GT I9100 without the G will this procedure work for this phone?

    • Pradeep Neela

      no, its for i9100G model.

  • neeraj

    i have s2 GT I9100G, my device is not rooted,, how can i root it. please help.

    • Pradeep Neela

      yes you can follow the instructions for applying the update

  • Celso

    Only for S2 I9100G? Or for I9100 too?

    • Pradeep Neela

      ITS APPLICABLE TO i9100g

  • Gulshan Mehta

    i am having micromax A110Q, Canvas 2 plus. Can i use the same procedure to upgrade my android os from 4.2.1 to 4.3.

    • Pradeep Neela

      no, you cannot apply this update

  • Gulshan Mehta

    i am having micromax A110Q, Canvas 2 plus. Can i use the same procedure to upgrade my android os from 4.2.1 to 4.3.