Sony and HTC provide a way to unlock the bootloader on their official sites, but require little effort to accomplish this. The one-click Sony and HTC bootloader unlock app from Kingo makes it easy to unlock and re-lock many Sony and HTC devices. Here is how to use this app.

Important: Although using this tool is safe, only use if you have proper skills on Android operating system. Warning: Unlocking bootloader, rooting and installing custom recovery will void your device warranty. Also, back up your phone data before doing below steps. Procedure:

  1. Download and install the Bootloader Unlock tool for your device on your computer (Download for Sony, Download for HTC).
  2. Enable USB debugging mode on your phone [Go to Settings > Developer options > Enable USB debugging mode]
  3. Launch the Bootloader Unlock Tool.
  4. Connect your phone to your PC (Use original USB cable. Also, make sure that you have a working internet connection). kingo will automatically install the device driver and establish connection with your device.
  5. When the Unlock button gets green, click it. Follow the On-Screen instructions, and get it unlocked. It is important that you read the notifications carefully to avoid trouble later on. If you want to re-lock the bootloader, you can follow the same way.