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)

[Pouyan11]

well i tried to go in fastboot (in Flashtools) and i could...!

But i dont know that i have to download and flash which correct kernal...!!
plz give me a link with Tutorial ..

[_alexdon_]

Visit the site that Thommo gave you,there you have all you need.

[Thommo]

Fastboot and Flashmode are different - To manually flash you need Flashmode - Fastboot if for flashing custom roms or unlocking bootloader etc Flashmode is for flashing stock .ftf rom firmware files

[Pouyan11]

my bootloader is unlocked but i think that i can go to flashmode just when my phone is Working!! but it's turn off and i can just goto the fastboot  I do not know what should I do

[_alexdon_]

If you press volume down when you connect via usb,can't you get in flashmode?

[Pouyan11]

Yeah Buddy 

[_alexdon_]

At least can you find a sony shop around?

[Pouyan11]

I try to find... thanks bro

[_alexdon_]

Keep us updated and good luck.

[Danial-mach1]

pouyan

as Alexdon and thommo said goto xda-developers.com there you must find soloution if you cant

then goto "bazar mobile in hafez street(jomhuri in tehran) there is a sony repair center(but i dont think its a official repairing center)