Excellent, good work! Hmm, interesting that your B/W G3 is kernel panicing. I'll have to extensively test it with the card to see if I can make it happen...And i can confirm, the converted cards are bootablecloned my boot drive and booted right up from the card
Pretty much. Actually, as best as i can tell, the FirmTek updater doesn't check for a supported flash chip at all, it only checks for whether the flash chip already has FirmTek firmware on it.
The firmware extracts a couple of kexts into OS X, and one of the kexts checks for supported flash chips during the OS X boot process and fails to load if the board doesn't have a supported flash chip. (In fact, on a newer revision of the firmware that they don't have available on the website for download, it causes a kernel panic...)