Unlocking Sony Xperia Z4 Tablet LTE and installing latest TWRP recovery (3.1.1-0) is very easy now. Just follow below guide as it is. Unlocking your smartphone/tablet is the first step to extract the complete juice of your device hardware. Once Sony Xperia Z4 Tablet LTE is unlocked, you can then easily install custom recovery such as TWRP recovery, can root it using Magisk or SuperSu. After root access, you can perform various system related task which otherwise isn’t possible.

Related: How to Root Sony Xperia Z4 Tablet LTE in 2019 – Easy Guide

How To Unlock and Install TWRP Recovery On Sony Xperia Z4 Tablet LTE

WARNINGUnlocking the bootloader will erase all data on your device! Before proceeding, ensure the data you would like to retain is backed up to your PC and/or your Google account, or equivalent. We (TrueAndroid Team) are not responsible if anything happen to your device while following this tutorial.

TWRP Recovery Installation Guide

Advantage of TWRP Recovery

  1. A touch based interface.
  2. Can flash custom ROMs, Mods and kernels.
  3. Can wipe Dalvic /ART Cache.
  4. Allow you to access and use phone memory when you are in recovery.
  5. You can install Xposed Modules.
  6. You can root your device using root zip file (magisk, supersu etc.)
  7. Flashing a custom kernel may help you to overclock or underclock your SoC.
  8. Can factory reset your device.
  9. You can remove all bloatware by flashing proper bloatware removal zip.
  10. You can take a full system backup (Nandroid) and later restore it.

Requirements:

  1. Make sure your computer has working adb and fastboot. Setup instructions can be found here.
  2. Enable USB Debugging on your device. [Tutorial]
  3. Proper USB driver is installed. [Download]

How To Unlock Sony Xperia Z4 Tablet LTE

  1. On your device, dial *#*#7378423#*#* (*#*#SERVICE#*#*) to launch the service menu.
  2. Then go to service info > configuration and check rooting status – you can only continue if it says Bootloader unlock allowed: Yes.
  3. First, connect your device to your PC using a USB cable.
  4. Now on your computer open a command prompt (on Windows) or terminal (on Linux or macOS) window, and type: adb reboot bootloader . You can also boot your Sony Xperia Z4 Tablet LTE to fastboot mode using key combination. To do so, first turn off your device. Then hold Volume Up and connect the USB cable. The notification light should turn blue.
  5. To confirm the device is connected in fastboot mode or not, type: fastboot devices.
  6. Now follow instruction that available on Sony’s official unlocking website to unlock your bootloader.
  7. Since the device resets completely, you will need to re-enable USB debugging for the next recovery installation process.

Once unlocking process is completed, you can then follow below steps to install TWRP Recovery.

How To Install TWRP Recovery 3.1.1-0 on Sony Xperia Z4 Tablet LTE

  1. Download TWRP.
  2. Once done, connect your device to your PC using a USB cable.
  3. Now on your computer open a command prompt (on Windows) or terminal (on Linux or macOS) window, and type: adb reboot bootloader . You can also boot your Sony Xperia Z4 Tablet LTE to fastboot mode using key combination. To do so, first turn off your device. Then hold Volume Up and connect the USB cable. The notification light should turn blue.
  4. To confirm the device is connected in fastboot mode or not, type: fastboot devices.
  5. Once confirmed, type the following command to flash TWRP Recovery: fastboot flash recovery twrp-x.x.x-x-karin.img. [NoteReplace TWRP file name with your downloaded file name]
  6. The device should automatically reboot, if not then reboot it manually.

Tip: To boot into recovery first turn off your Sony Xperia Z4 Tablet LTE and then press and hold Volume Down and Power button together.

That’s it! You now have an unlocked Sony Xperia Z4 Tablet LTE with latest supported TWRP Recovery installed.

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