If you have SONY Xperia T and want to upgrade it to increase its efficiency, then this is right place as we are giving information regarding an upgrade to AOSP Jellybean 4.1 Firmware . Before go through instructions of upgradation/installation, make sure that this upgrade applied only for rooted devices. You can check if your device is rooted or not with the help of e “Root Checker” app which is available for free from Google PLAY Store. The developer of this firmware created/coded one because there is no official release for  Jellybean upgradation.

Important Note: This Firmware is taken from a very reliable developer from XDA Forum and is completely safe to install on your device.Yet we would adivce you to go for this upgrade at your own risk as neither this site nor the author can be held responsible for any problem in upgradation such as bricking of Device. However, this happens only in rare cases.Also you would lose warranty of the hardware(if any) after upgrade.

To make it easier for Sony Xperia T users, the entire upgradation process has been divided into two easy to understand parts:

  • Pre-Upgardation Steps.
  • Final Upgradation Steps.

Please follow all the steps with extra care and donot miss even a single step.

Pre-Upgradation Steps for Sony Xperia T

  • First of all make sure that your device is Sony Xperia T.(Check at Settings> About Phone). Don’t try to run this upgrade on any other version.
  • Also, this upgrade can only be executed on unlocked boot loader devices.
  • We would advice the users to first take a complete backup of the existing ROM by using Nandroid Backup and Restore App.
  • Important data such as SMSContacts etc.can also be backed-up on PC or any other device .
  • Also make sure that your SONY Xperia T is at-least 55% charged as the upgrade will be done on the battery power.
  • Next, we would recommend to disable all the anti-virus(if any) which are running on your Device. Also uninstall the Kies package from the computer which will be used to upgrade.
  • Now th important step,enable USB Debugging on your cellphone (The option available at Settings > Applications > Development > USB debugging ).galaxy s3 usb debugging LG Optimus 3D P920: Upgrade to ICS Android 4.0.4 Custom Firmware
  • With this, your SONY Xperia T is now ready for upgradation to AOSP Jellybean 4.1 Firmware.

Final Upgradation

  • First of all, download the CM 10 based AOSP Firmware and Google Apps Zip Package on your Laptop/PC.
  • After the download is done, transfer the Zipped folder to the SD card of SONY Xperia T using USB cable.
  • Now disconnect your SONY Xperia T from PC/Laptop and turn it off (so that it can be started into recovery mode).
  • Now Press Volume Up button + the Home key button (the middle button). Keeping holding them and switch on your Mobile using Power Key.
  • Your device will now boot in recovery mode. If it is not, try repeating the above steps.
  • Now in the recovery mode, Select “Wipe data/factory reset” >> “Wipe Cache partition”.
  • Then select “install zip from sd card” >> “choose zip from internal sd card”.
  • Then select the zipped folder you’ve downloaded and your Phone will start upgrading.
  • After the upgrade is completed, just restart your cellphone.

With this, you’ve successfully upgraded to AOSP Jellybean 4.1 Firmware. Enjoy your Sony Xperia T with more efficiency. If you face any issues during upgradation, feel free to ask us in the forn of comments below.

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