I'm pretty sure that the TSATA ROM is munged in some way so that simply lifting a copy and programming a chip with just won't work.

I don't know whether the Sonnet programmer has a little routine built in to decode/demunge the ROM code as it programs the TSATA chip, or whether the Flash on the TSATA actually has some of its pins swapped around in odd ways.

In either case, I'd be surprised if a simple programming job gets it working again.

Ultimately, one of us needs to desolder the flash from a working TSATA card, compare the contents to the resource used from programming the card, and check the connections between the Flash and controller chip on the circuit board to see if it matches reference designs.

I have it on my list, but that list has only gotten longer in the last four years and never shorter.