Samsung Galaxy S2 GT I9100 users can now experience an all-new custom ROM firmware which is dubbed as Jellybean 4.1.1 firmware which ropes in the goodness of 4.1.1 and also comes with a host of features which we will be discussing in the due course of this article. Please be informed that this is not an Official firmware version released by Samsung Electronics and is a custom ROM firmware released by the XDA recognized developer cile381. For your convenience, we have mentioned the detailed list of features which this ROM comes along and also the screen captures on how this custom ROM firmware looks like. The best part of this update is that it comes with all the latest apps of Jellybean and also looks like the native version of firmware. As of now there is no ETA on by when there will be an official update of Jellybean 4.1.1 firmware. In the coming days we will be coming up with many more custom ROM firmwares based on the ICS as well s on the Jellybean 4.1.1 firmware based.
Note: This firmware of Jellybean 4.1.1 ropes in the latest JRO03H version of firmware and is only compatible with the Samsung Galaxy SII GT I9100 model and it doesn’t support I9100G model. You can find the model number from the path “Settings > About Phone”.
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.
- All the data in your Samsung Galaxy S2 GT I9100 smartphone will have to be backed up so as to make sure that just in case if the data gets lost or corrupted, the same can be restored with the help of below mentioned steps. Don’t use KIES for backing up the data as it doesn’t support the beta / custom firmwares.
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”
- USB Debugging Mode will have to be turned ON from the path “Settings > Applications > Development > USB debugging”. All the security suites in your computer should be turned Off or uninstalled as these interrupt the process of firmware update. Minimum charge left in your device should be 50% so as to make sure that the device doesn’t get turned Off in the middle of firmware update.
Screen Captures of JRO03H Jellybean 4.1.1 Firmware:
So assuming that you have followed all the above mentioned instructions, you can now proceed to the next Step where we have summed up a detailed instructions.
Procedure to Update Samsung Galaxy S2 GT I9100 with JRO03H Jellybean 4.1.1 Firmware:
- First up you need to ensure that you are on the rooted firmware which you can check by downloading the app called “Root Checker”. If your device is not rooted then you will have to root the same.
- If your device is not rooted then you will have to root the same with the help of below mentioned steps. You can be on any rooted firmware and not necessarily on a particular firmware, only thing you need to ensure is that its preferred to be on the ICS based firmware.
How to Update Galaxy S2 GT I9100 with Official XXLQ5 ICS 4.0.4 Firmware
How to Root Samsung Galaxy S2 GT I9100 on XXLQ5 ICS 4.0.4 Firmware
- Once the device is rooted, the warranty is void. To regain the lost warranty apply the update of XXLQ5 update in your device.
- So now once you have rooted your device, download JRO03H Jellybean 4.1.1 Firmware package and Google Apps Package from here to your computer. Once downloaded, connect your phone to the computer with the original USB cable and place the downloaded zip file in your device. Don’t place the file deep into the sub folders.
- Disconnect the device and turn off the device so that it can be then entered in the recovery mode.
- Recovery mode in Galaxy S2 GT I9100 can be entered by holding the Volume Up button + the Home key button (the middle button). While holding these both buttons, turn ON your device. In recovery mode, select “Wipe data/factory reset” & “Wipe Cache partition”. Additionally, select “advanced” and clear the Dalvik cache too if you are on the custom ROM firmware. If the device boots in the normal mode, then you need to retry entering the device in the recovery mode. You can also enter into recovery mode with the help of CWM application in ROM Manager app.
- Select “install zip from sd card” > “choose zip from internal sd card” and then choose the JRO03H Jellybean 4.1.1 Firmware package & Google Apps Package which you placed in your device. Once you have selected the file, it will take around 4 -5 minutes for applying the same.
Note: If the device gets into the boot loop sequence or say gets stuck in the welcome screen, just re insert the battery and re follow the above instructions so as to again follow the above mentioned instructions.
So congratulations you have successfully applied the update of JRO03H Jellybean 4.1.1 Firmware in your device. You can check the same from the path “Settings > About Phone” to check whether it has been updated or not. Do share with us in the comments section just in case if you face any issues and we will try out level best to sort out the same.
