Xperia z wont boot up after crash update

[Pouyan11]

Hi Buddies. i got the same problem as every one else in this post but i cant use SUS because Here is the error message I get. I have tried all the suggestions on that page but I still get the update failed message. I have tried both SUS and PCC with my antivirus and firewall turned off and the latest java installed. Can ypu please help me? I just want my phone to work! It's so useless now not turning on or anything. so what should i do to fix my xperia z

*it should to say that I would like to do this Instructions from here but when i choose Kitkat rom zip file and install it, I get the following error and When I restarted it, that wont boot up...! Plz Help me. 

The Error in the recovery: (set_metadata_recursive some changes failed)

[_alexdon_]

Have you unlocked bootloader?That is why it should give you this kind of message.

[Pouyan11]

Yes i have unlocked bootloader..

[_alexdon_]

I do not think you will be able to update anything.You need to relock bootloader,but I am not informed in that kind of processes.

[Pouyan11]

ok i relock the bootloader but my phone wont boot up only show the sony logo and cant get past it. 

[_alexdon_]

I think you should visit a sony service,maybe your phone is bricked.

http://www.sonymobile.com/global-en/support/contact-us/

[Pouyan11]

I'm from Iran and Couldnt find my country in the list of that page... 

[Thommo]

Have you tried to manually flash using Flashtools?

If you can get into Flashmode then it's not a hard brick just a soft meaning corrupted firmware probably due to a mismatch in kernals

[_alexdon_]

Charge your phone for 1 hour and after that flash your phone with a ftf that you can find compatible.Look on XDA.

[Thommo]

See this link here - Sign up - Choose a firmware then on the download page is the download link and instructions on how to manually flash