Thanks Meter 12
Join Date: Oct 2009
Location: West Yorkshire / Silesia Poland
To any one having same problem as me. Flash B118 Stock Recovery (via bootloader and fastboot commands) Download P6 Unicom EMUI2.0 from here http://dl.vmall.com/c01l4l4a2y#
, unpack and copy dload folder to your memory card and install from "locale update" or force update from recovery by pressing power+volume-volume when phone is off. Next, download B132 International and make update the same way as before (update.app in dload folder). Last step, download B512 official international kitkat and again unzip and use "local update". Just remember to delete old update.app in dload folder. If you experiencing any issues, just do factory reset for fresh install. As my phone is P6-U06, I don't know if it will works for others.
Just please notice: after B132 update I've had message "android process media has stopped" and had to factory reset before update to B512 KK.
so best Idea make a backup of all your important things before you do anything.
I hope it will help to somebody else.