W850i Brightness go dim After A flash...Please Help

Dear Friends,
I have Flashed My W850i file system with
W850_R1KG001_FS_C_ASIA_RED52
And Now My phone brightness go dimmed.
At startup The Brightness Is So Good But When i stop work on phone for 10 t0 20 sec or can say if the light go dim once if we dont work than it never become full until i dont restart the phone. Please Help What Can I Do?????????
Please Help!!!!!!!!!

Thanks In Advance:(:mad:

Hi, I've got the same problem with a flash on a K790, every time the screensaver goes on, the brigthness go off and only accesing at the tools menu and modifiing the brigthnes, it goes back on full...

You can't flash only FS (and FS must be same like MAIN) read this tutorial XS++ 2.x Guide - Top Sony Forums and post log from XS++ here