Some vendor Specifics would be preferable... Gigabyte, MSI, Sapphire, Asus and ATIFlash.
Additionally, adding the Corsair Link software would be sweet for the next build. It is the Power management software for the Intelligent Digital PSUs they have. It will allow us to know the true Watts the system is using. It connects via USB.
So I downloaded and took at look at all of the GPU BIOS utilities. ASUS and Gigabyte utilities are just skins for ATIwinflash. MSI won't work, and I'll try Sapphire Trixx when my last GPU gets back from RMA. It's not a Sapphire, but it should tell me if it at least works.
Corsair Link is a no-go. As I said before, no .Net applications will work unless we install the runtimes, which would easily double or triple the size of the ISO. And in the case of this particular software, it's a very niche market. Not a lot of people are using that exact PSU, I suspect.