This official CM 12.1 Nightly Android 5.1.1 Lollipop is only for Sony Xperia Tablet Z 2 (Wi-Fi) don't try it on other Xperia Tablet.
•Warranty may be void of your device if you follow the procedures given on this page.
• You Tablet should be Rooted & have The latest version of a custom recovery (CWM or TWRP) installed on your phone.
•Make sure there is at least 80% battery left on your smartphone before begin this process.
*Disclaimer:
Android Custom ROM fix ® provide various Firmware Updates and Rooting process along with Custom ROM,Modes,file are all belong to their owners/developers. The autor of this site or the developers are not responsible, if you damage or brick your device.Do it on your own risk and follow the instruction properly.
* Important:
Backup important files stored on your device before proceeding with the steps below, so that in case something goes wrong you’ll have backup of all your important files.
÷ How to Update Sony Xperia Tablet Z 2 (Wi-Fi) With Official CM12.1 Nightly Android 5.1.1 Lollipop
Download
Sony Xperia Tablet Z 2 (Wi-Fi) Official Nightly CM12.1 Android 5.1.1 Lollipop ROM and
Google Apps.Step 1. Make sure that you have unlocked bootloader of your Sony Xperia Tablet Z 2 (Wi-Fi) If not, then do that first.
Step 2. Also make sure that you have installed a custom recovery like TWRP on your device. TWRP recovery is required to be able to install CM13 ROM.
Step 3. Download the CM13 ROM and gapps file from above.
Step 4. Connect your device to PC and transfer the ROM and gapps file to it. Disconnect the device then. Remember the location of the files.
Step 5. Boot your Sony Xperia Tablet Z 2 (Wi-Fi) into recovery mode. If you are rooted, you can use Quick Boot app from play store. To manually boot into recovery mode, do this:
Power off the device. Wait for 4-5 seconds after screen goes off.Now, power on the device using power button and then be sure to press the volume up or down key repeatedly once you see LED light blinking on the device.
You will enter recovery mode soon, and should see TWRP recovery. If you see android with exclamation mark, or 3e recovery, then you need to install TWRP recovery for this.
Step 6. [Optional] Once in TWRP, create a backup of your device. Tap on Backup, and then select all the partitions for back. Now do the swipe action at bottom to start creating a backup for emergency cases. This backup is really a lifesaver!
Step 7. Do a Factory Reset. On TWRP’s main screen, tap on Wipe, and then do the Swipe action bottom to confirm it.
Step 8. Now, install the ROM file. On TWRP’s homescreen, tap on Install, and then locate the ROM file and tap on it. Then do the Swipe action at bottom to begin flashing the update.
Step 9. Tap on Home button to go back. Now, install the Gapps the same way you installed CM12.1 ROM on your Sony Xperia Tablet Z 2 (Wi-Fi)
Step 10. When it’s done, tap on Reboot system button to restart the device.
That’s all now CM 12.1 Nighty should run smoothly on your Sony Xperia Tablet Z 2 (Wi-Fi) and you can therefore experience the Android 5.1.1 Lollipop OS on your own device. Enjoy.
Best regards.