Bump in case anyone has a software solution that doesn't involve flashing the BIOS. I flashed a few of my cards with RBE, but I don't like it. Just worried I'm going to brick a card or have a nightmare unloading them later if I need to restore BIOS with specific signatures or something.
You didn't make BIOS backups? At least for those card you haven't flashed yet, you really should! And if something goes wrong you'll have at least one working card, from which you can reflash the backups.
I made backups of course, just thought maybe there was a signature specific to one card or something like that, and I would need the exact BIOS to flash it back. I'm planning on having a lot of these so it would be a problem if that was the case. That and voiding the warranty made me stop at flashing a few.
I'll look into that AMDoverdriveCtrl.