It is possible to unlock the boot loader for certain releases of Sony Ericsson Android? phone models from 2011 and onwards.
Please note that you may void the warranty of your phone if you unlock the boot loader. Sony Ericsson can then no longer guarantee the full functionality of your phone, and will not be responsible for any unsigned custom software being flashed to the phone after the boot loader is unlocked. Certain functions in your phone might cease to work, and performance might not be ideal. You might also damage your phone permanently. In the worst case, unlocking the boot loader will cause physical injuries or material damage, for example, due to the phone overheating.
Certain content on your phone may also be inaccessible due to the removal of DRM security keys and the secure user data partition while unlocking the boot loader.
Therefore, you should only unlock the boot loader of your phone if you are an advanced user with good knowledge of the technology and risks involved. We strongly recommend that standard users NOT unlock the boot loader, as it is not needed. We are proud to deliver great phone experiences through our rigorously tested and official software releases.
See the Which phones-page to see what phone models are supported by this service.
If you are fully aware of the risks involved, and have a deep knowledge about these technologies, continue to the unlock boot loader instructions page. You should be aware that unlocking the boot loader will not give you root access. The only way to get root access is to flash a custom ROM with root access.
For any questions, Sony Ericsson will monitor this thread on Google groups. However, we cannot guarantee an answer for every question asked in this forum.
Please note that there is no turning back when unlocking the boot loader. You will not be able to revert the phone to a locked or original state if you unlock it. Also, if you brick the phone, it is your own responsibility.
It is currently not possible to unlock the boot loader for CDMA phones. We are however working on this.Start unlocking the boot loader
I really applaud this open stance from Sony Ericsson. I don't think I would risk a brand new Play on this but it's a cool idea anyway.