How about the patch:
It change the maximum backlight PWM frequency to 16217Hz to eliminate the mosquito noise.
How to apply the patch:
Similar to the rom update, just flash the patch in Recovery.
Patch for Feiyu 0930 Rom / Rom based on Feiyu 0930:
Patch for other Roms (Except CM and Official 0921 Rom):
P.S. Someone reported that it is also work for official 0921 Rom, just try for your own risk.
Sorry for my bad English.
Edited by ghostboy, 23 October 2012 - 04:10 AM.