How do I unlock the bootloader on Xperia devices?
You can unlock the bootloader of your Xperia device to install custom ROMs and replace existing software. It's generally not recommended to unlock the bootloader, and such a procedure should be done by advanced users only. The software that comes with your device is tested rigorously and is designed for all types of users. If you are not familiar with the risks involved, do not attempt to unlock the bootloader.
To learn more about the risks and technical details involved with unlocking the bootloader of your Xperia device, visit Developer World.
Note! Some network operators prevent users from unlocking a device's bootloader.
To unlock the bootloader
- Go to https://developer.sony.com/develop/open-devices/get-started/unlock-bootloader/ and follow the on-screen instructions.