Update Android 5.1.1 Lollipop on Sony Xperia T LT30p with UNOFFICIAL CyanogenMod 12.1 Custom ROM


Android 5.1.1 Lollipop based UNOFFICIAL CyanogenMod 12.1 custom ROM in now available to download and install. In this tutorial we are going to guide on the complete process to flash the Android 5.1.1 Lollipop custom ROM on your Sony Xperia T. Sony already left software update support for this device and the Xperia T was unable to receive the latest firmware updates, but thanks to developers which not only made Xperia T compatible for updates but also provide latest firmware which includes all the latest feature and functions found in the Android 5.1.1 Lollipop firmware.

You can easily install the Android 5.1.1 Lollipop firmware in your Sony Xperia T through a custom recovery like CWM or TWRP. We have mentioned the whole process to flash the Custom ROM via recovery, just go ahead and flash the latest firmware in your device.

How to install Android 5.1.1 Lollipop on Sony Xperia T LT30p with UNOFFICIAL CyanogenMod 12.1 Custom ROM

Before you Begin:

Disclaimer: This tutorial includes multiple operations which includes Installing Custom ROMs, Custom recovery and root. Follow the guide on your own risk, we are not responsible if you brick or damage your device however the chances of bricking a device are rare but you have to pay full attention on the complete guide to avoid any issues and difficulties while performing any of the above mentioned operation.


  • Please ensure your phone battery should be charged at minimum 80%
  • Download and install latest Sony USB drivers
  • Your device should have a working CWM or TWRP recovery installed.

Necessary downloads:

Process to install Android 5.1.1 Lollipop on Sony Xperia T LT30p via UNOFFICIAL CM12.1 Custom ROM

In this tutorial we are using the ClockworkMod recovery flash process.

Turn of your device and boot into CWM custom Recovery menu by the hardware keys combination or using any third party app (Mostly found in Play store).

Once your device enters into CWM recovery, create a Nandroid backup of your device or follow our guide to create a Nandroid backup (this will create a backup of your complete device including current firmware) if something goes wrong you can restore your previous firmware.

Once the Nandroid process completes, navigate and select wipe data/factory reset.(this will erase your data)

Now it’s the time to flash the CM12.1 ROM on your device. Choose “install zip from sdcard” >> choose zip from sdcard & navigate to the folder in which you have copied the custom ROM.zip file and select it.

Select “yes” to confirm install, wait for a few minutes till the file is completely installed in your device.

Once done with the above step, now apply the same process with the installation of Android 5.1.1 Lollipop Gapps.

Wait for the installation process to complete. The first boot up may take 5-7 minutes.

If your device is taking longer then 7-10 minutes then follow this guide to to fix this issue 

That’s it! Enjoy the latest firmware Android 5.1.1 Lollipop custom ROM on your Sony Xperia T LT30p. If you have any query feel free to contact us by posting your queries in the below provided comment section. Follow us on Facebook/Twitter/Google+ for future update.

A Software Engineer who loves to hang around latest gadgets and writes his own experiences to get the best possible and accurate information.
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