How to relock bootloader?

[XEL]

I unlocked mine way back when it was on Android version 4.4.2.. Now there's an update to 4.4.4. but I can't update it since I have an Unlocked Bootloader right? :(. So.. Is there a way for me to lock it back? 

My Phone are Xperia M2(D2305)

[Uliwooly]

Here you go 

http://forum.xda-developers.com/showthread.php?t=2447319

[Uliwooly]

Just keep in mind that your DRM keys are forever gone 

[XEL]

I unlocked mine way back when it was on Android version 4.4.2.. Now there's an update to 4.4.4. but I can't update it since I have an Unlocked Bootloader right? :(. So.. Is there a way for me to lock it back? 

My Phone are Xperia M2(D2305)

[XEL]

oops sorry

[XEL]

Alright, thanks! Unfortunately, I have done that just now, Relock succesful but my device doesn't boot after relock! I have to go and Unlock it again for it toboot again

[Uliwooly]

what if you let it charge for 2 hours > then repair it with PCC and check again 

[XEL]

I tried charging it, and it shows a Red light flashes over and over again, No greed light. 

[Uliwooly]

were you able to repair your phone?

[XEL]

Yes, I managed to update it to Version 4.4.4. using the flashtool. Now.. I can't find a kernels or cwm recovery (whatever it's called) for it.  I have looked everywhere on google and I can't seems to find it.