Problems with ATI 4850 after BIOS flash

[dirtysouth_boy]

Ok so I modified my 4850 BIOSes RBE and now when I go to crossfire them I'm always getting a BSOD. I've tried it with XP and Vista and fresh installs with both. They run perfectly fine when the cards are by themselves though. I'm wondering if anyone else has had this kind of problem after a BIOS mod. I have one question too though because after I successfully had flash both BIOSes I had deleted the originals like a moron and was wondering if someone had a copy of it.

 

[afw]

Well i too had the same problem with my HIS 4850 (single card) ... but i could go up to 690/1100 with stock voltages without any issues (original BIOS) ...

check the BIOS collection
http://www.techpowerup.com/vgabios/...cturer=HIS&model=HD+4850&interface=&memSize=0

 

[dirtysouth_boy]

I tried using the 1 GB one which is what my card is but when I try to flash it with atiwinflash it says it can't because it doesn't match my card. Which it doesn't the BIOS from the downloads section has a VID of 1.20 and mine goes to 1.250