Since you are flashing your board with a different model BIOS, you cannot just use the BIOS QFlash utility or the Windows based @BIOS. Instead, you need to flash your UD4 board with a DOS BIOS flashing program called SPIFLASH - a quick Google reveals it is readily available online. Once you've downloaded the utility, you need to enter DOS mode with a boot disk and simply type in the command "SPIFLASH EX58UD4P.F6", then the BIOS flash update will proceed. Once you've rebooted and gone back into Windows, you'll have SLI support.Try at your own risk.
Enabling SLI on a non-SLI motherboard
Posted on Wednesday, March 18 2009 @ 18:41 CET by Thomas De Maesschalck