i have 11 of those ones - about to purchase quite a number of the low profile ones ( without the 6pin power socket ) same performance but no firmware upgrade ...
i might test that soon actually - have a look into it - but i doubt if it would be viable to do so as they will lose resale value if they are to stop working with windows ...
tanx for the heads up though ...
#crysx
You just need to take a backup of the existing ROM. If you want to sell the cards, reflash them to the original bios.