Xperia X8: How To Relock Bootloader

For you, xperia x8 owners maybe for some reasons want to re-lock their bootloader here’s the tutorial.

Requirements (a must!):

I assume you already have stock rom and kernel installed. If not you must install it first or else do not continue. Relocking your bootloader on custom kernel will results in hard brick.

(since you unlocked your bootloader, so I also assume that you know how to install stock rom and kernel). If you don’t know how to install stock rom just download pc companion for x8 and follow the steps.

Relocking bootloader steps:

  1. Launch the s1tool.exe
  2. Click restore button on s1tool
  3. Turn off the phone
  4. Connect your phone in flash mode (press back button while plugging your usb untill green led blink)
  5. Wait till it finished relocking your bootloader.
  6. The phone will restart

Checking

Repeat the step above but on no 2 step you choose identify not restore if the previous relocking process successful you will see something like RUNNING S1_EROM VER "R8A029" notice the CAPITAL R.

Unsuccessful - you will see it with small r which means your bootloader still unlocked.

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