Cindori, Love your app wish i would have found it before wasting 6 hrs bricking my card and reflashing in a pc machine. -- and donated justly!
Anyways, I have a mac pro 1,1 with the following video card
Attached orginal rom.
Sapphire radeon HD 4870
288-1E131-000SA
11133-19-20R
The 4870 sapphire new flash in your tool is the closest i've come to it working right, but its running hot, is it possible the voltages are too high or something like that in this card?
anyways if you find time would you take a look at this one to see if there is something different?