Original Airport Card Firmware Update?

I have been trying to update the firmware on my airport original card. Even though I installed the 4.2 update via panther, I still found the firmware to be the same. Is this wrong? It says the airport card firmware is 8.7 something. I think the latest wpa compliant version for the airport original is 9. something. I can't seem to figure out why this didn't work. (P.S. I realize this is supposed to be for airport extreme cards, but I can't seem to find out where to post this.)