unlocked HD3850 512mb bios

[Thoth36]

I have a Powercolor HD3850 512MB xtreme and looks like my card does not have a 2d mode. I tried flashing it to a newer PC bios 070 (mine come with 067) also tried a Gecube 073 bios but Rivatunner/ati ccc or Gpu-Z 0.15 don't show a 2d mode, it's always at 3d clocks. Both times i flashed with atiwinflash and i didn't had to reinstall drivers, it only asked to restart.
Another weird thing is i can't overclock with Rivatuner, when i hit the "apply" button it just revert to the default 3d clock...

You can modify your bios to change the 2D settings:



This is one that I modified previously to downclock the 2D clock to 300Mhz and the 2D voltage to 1.014v

Above the original bios and below the modified one.



You must also know how to covert dec to hex (simple using the windows calculator in scientific mode)

_BIOS______HEX_____DEC
30 75 00 = 00 75 30 = 30000 = 300 Mhz
40 19 01 = 01 19 40 = 72000 = 720 Mhz

BE 04 = 04 BE = 1,214 Volt
F6 03 = 03 F6 =1,014 Volt

PS: This is what I understood from reading, I am not a specialist. Those are the changes I did and I didnt have problems.