i've updated my n9 to 1.2 through OTA. After reboot it gave me the warranty error again. I pressed volume keys a few times and it passed the screen. Gave an another error, i said okey. After that phone booted and running without problem. Phone got all 1.2 features but it says on about section its version is 20.20... like 1.1 . When ever i reboot the phone it gives warranty error. How do i fix this.

note:I flashed the phone many times before it came by OTA. Because of the warranty error i flashed back to 1.1 getting cmt from 1.2 .