I am using an original 256 MBit F2A cartridge with a F2A USB cable without huge problems (so far I couldn't find out how to not flash that ugly Multiboot menu and use Pogoshell instead, but it flashes and reads okay). Just got it a couple of weeks ago from someone in the trading forums here. Before that I used it with the ancient stand alone parallel port Flash Advance Linker, that should tell you how old my cartridge is.
AKAIO works quite nice for flashing, too, btw.
Do you have a computer with a parallel port!?