Galaxy S III

How to Update Galaxy S3 I9300 with Leaked Jellybean 4.1 Firmware – Tutorial

JB4.1Have a Samsung Galaxy S III GT I9300 and are on Cyanogen mod 9 firmware then the great news for you is that you can now install the latest beta version of Jellybean 4.1 firmware. Please note that this Jellybean release is not an Official release by Samsung or Google Inc. for SIII and also we have no estimated time on by when it will be pushed officially. In the process of applying this update, you will be required to root the device. Once the device is rooted, the warranty will get void. The only way with which the warranty can be reclaimed is by re applying the Official firmware update in your device. It was in the last article, we saw on that very soon Samsung will be coming out with Jellybean 4.1 update for its Flagship device Galaxy S III.

Disclaimer: This update should only be applied to the devices which have the device model name as Samsung Galaxy S III. This should not be applied to the NETWORK LOCKED version of Galaxy S III. Androidadvices should not be held responsible or liable for any sort of damage happened to your device due to not following of instructions.

Just in case if you are on the Stock firmware or default firmware, you will have to first root the device and then you need to install the custom recovery image in your device. There will be some bugs in this firmware and also there are things which doesn’t work. All these are mentioned below. For your convenience, we have also mentioned some of the screen captures on how this ROM will look like in your Galaxy S III.


What Works:

  • ADB
  • Touchscreen
  • Hardware Acceleration
  • Notification LED
  • Cellular Rado (But No Audio so no Calls)
  • Physical Buttons
  • SMS
  • Accelerometer
  • Charging
  • Maybe More

What Doesn’t work:

  • Wi-Fi/Bluetooth/NFC
  • Audio
  • Camera
  • MTP
  • Storage
  • Maybe more

Back up all your data with the help of below mentioned steps as in the process of this article data loss may happen or even the data may get corrupted. With the help of below mentioned steps, you can easily restore the data, ensure that you are copying all the targets 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

Enable the USB Debugging from the path “Settings > Applications > Development > USB debugging” and also you will have to ensure that the minimum battery life should be 50% so as to ensure that the phone doesn’t get turned Off in the middle of update.

So let’s get started with a detailed guide on how to apply this update in your device.

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  1. Zenzenboy

    July 14, 2012 at 10:44 pm

    haf any1 done it ?

  2. Nikhalesh Singh

    July 2, 2012 at 9:51 am

    how can we update s2 to jellybeen

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