Quote Originally Posted by Don Quichote View Post
opened Hex-editor and searched for some empty space (00 00 00 00)

entered what i need to get to my checksum ( e.g. if i get a checksum for the orig.bios of 0x8B00, but my modified file has 0x8A9B; I overwrote some zeros with 65 (0x0065) and as result got again to a checksum of 0x8B00)
^^^^ A ludicrous suggestion; don't try it. This will easily brick your card, and youl'll need another adapter to re-flash.

I think most ppl are using the editor now anyway.