Help Needed Re Locking Bootloader Xperia Z C6602

[pathyas]

I have Unlocked my bootloader using sony official method and also rooted my phone and flashed custom firmware

now for warranty purpose i wanted to relock bootloader and flash stock firmware.

please help ! ! !

P.S. Tried searching google,xda and other sites,but no use so last hope sony official site.

PLEASE Help Guys

Thank You in advance+

[Uliwooly · Accepted solution]

even if you relock the bootloader the DRM keys are gone forever and in some countries like in the UK your warranty its gone.

http://forum.xda-developers.com/showthread.php?t=2191907

Don't forget to mark the Correct Answers & Helpful Answers

[Zann_H]

You can relock bootloaders using Flashtool > http://forum.xda-developers.com/showthread.php?t=2162907.

If you have already Unlock your BL, automatically means that you also lost DRM. But now there's a way to backup all those information before you unlock your BL. But only if its the first time the phone is unlocked. If not, then your DRM is gone for good.

[pathyas]

I tried downloaded latest flash tool http://forum.xda-developers.com/showthread.php?t=2162907 also follwed http://forum.xda-developers.com/showthread.php?t=2191907 there is no "BLU' button ?

[Zann_H]

The 'BLU' button is actually just next(right) to the flash button(lightning icon). Are you using beta6?

[pathyas]

yeah, now i downloaded the beta 6 and now it worked

thank you so much for helping and your help appricated

[onealll]

HI

i unlock my xperia zq with the oficial sony method, but know i want to relock it agains to get oficial upgrades back. Can u tell me how you did it

I already try with the BL button on flash tool but dident work