HOW TO: Install CM12.1 Nightly Android 5.1.1 Lollipop on Sony Xperia T LT30p

We have put together a detailed step-by-step instructions guide on how to install CM12.1 Nightly Android 5.1.1 Lollipop custom firmware on Xperia T LT30p. If you are used to installing custom ROMs on your Xperia T LT30p, then this should not be any different for you.

However, for beginners, you need to root your Sony Xperia T and install a custom recovery. Please Google that up if you are unsure and make sure you read the tutorial once before actually performing it on your device.

Sony Xperia T LT30p - CM12.1 Nightly Android 5.1.1 Lollipop

To Remember:

  • This tutorial is only for installing CM12.1 Nightly Android 5.1.1 ROM on Sony Xperia T LT30p. Please do not try on any other Xperia T variants.
  • Your phone should be rooted and have ClockworkMod recovery installed from before.
  • This tutorial will wipe out all your data. Proceed at your own risk.
  • Perform a Dalvik Cache wipe before proceeding from the recovery mode.
  • Sony PC Companion will NOT detect your phone after installing this ROM because it is a custom firmware.
  • Make sure you backup all your data in your phone before proceeding.

Complete Step-By-Step Instructions:

Step 1 – Download CM12.1 Nightly Android 5.1.1 ROM and Google Apps for Xperia T to your computer.

Step 2 – Connect and mount your Xperia T USB memory on your computer using the USB cable.

Step 3 – Now copy/paste the downloaded Android 5.1.1 ROM zip and Google Apps zip files to your SD card. Make sure the files are in the SD card root (not in any folder).

Step 4 – Then turn OFF your phone and disconnect from the USB cable.

Step 5 – Now to get in the Recovery Mode. Switch ON the phone while pressing the Volume Up or Volume Down buttons a few times when you see the LED light turn pink or any other colour. Alternatively, read this: How to Enter Recovery Mode on Any Android Phone.

ROM-Install-CWM-Recovery-5

NOTE: Screenshots of the ClockworkMod Recovery may change as new versions are released.

Step 6 – Once you are in ClockworkMod Recovery, select perform a full data wipe by selecting “wipe data/factory reset” as shown below. Use the Power button to select everything while in the Recovery Mode.

ROM-Install-CWM-Recovery-1

Step 7 – Then, perform a cache wipe by selecting “wipe cache partition” as you can see in the image below.

ROM-Install-CWM-Recovery-2

Step 8 – Now this is optional, but it is recommended to perform a wipe of your dalvik cache as well. You will not get into boot loops or any other errors. From CWM recovery, go to ‘advanced’ and then select “wipe dalvik cache”.

ROM-Install-CWM-Recovery-3

Step 9 – Then go back to the main recovery screen and select “install zip from SD card”.

Step 10 – Now select “choose zip from sdcard”. Using your volume keys, navigate to the Android 5.1.1 ROM zip file that you copied to your SD card and select it using the Power button. Confirm the installation on the next screen and the installation procedure should start now.

Google Apps: Repeat the above step for the Gapps zip file as well and install it on your phone.

Step 11 – After the installation completes, go to “+++++Go Back+++++” and reboot the phone by selecting “reboot system now” from the recovery menu as show below.

ROM-Install-CWM-Recovery-5

Your Xperia T LT30p will boot now and it might take about 5 minutes to boot on your first time. So, please wait.

That’s it! Your Xperia T should now have CM12.1 Nightly Android 5.1.1 Lollipop custom ROM installed on your phone! Go to Settings > About phone to verify.

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1 Comment

  1. Good afternoon, i was trying your tutorial in my Xperia LT30P but i get an error mounting some partitions(see the image below), can you help me please!! The same thing happen when I try your Tutorial for lollipop 5.0!! I have CWM 6.0.4 version 9 for Jelly Bean, and android 4.1.2 rooted,Thanks!!
    PD. When I try to install the gapps in this installation i get the error “Intallation aborted”

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