I had my card overclocked stable to 815/1100 (1.276v) with atitraytools, but i decided to try asus hd4870 top bios. So i did a backup of my original powercolor hd4870 with gpu-z 0.2.8, saved as rv770.bin I flashed my card on rbe 1.17 (and atiwinflash latest) with the asus top bios, everytinhg went fine. The card remained stable for days but then it started to crash on games, so i decided to try another bios (ati hd4870 xoc), the flashing went fine but it still crashed on games @ 815/1100. So i decided to flash a second time (already flashed once with the original backuped bios) with the original bios that i saved from gpu-z but on rbe i get this error now: "Unable to attain BIOS information. Not an ATI BIOS? - Debug information: 'GetStringPos' reported error Anyone can help me? I would like to restore my original bios but it keeps giving me that error. Can i use only atiwinflash to force flash with my backuped bios or is my bios corrupted? I already flashed once with the backuped bios but now it gives me that error.... Can anyone help me please? the bios i backed up from my hd4870 is in attachment.