I26

I have been trying to get my card to downgrade to a different version for about 3 hours now. I am using v8.72 now but would like to use v6.16. I have been finding some posts on here but none seem to work. Everytime I try the flash an error pops-up saying "No wireless card driver found." I can run the 8.72 updater without that error. I connect fine to the net as well. I am looking to flash it to v6.16 for use with a Linux distro and was hoping someone here could point me in the right direction. In the the meantime I will keep scouring the net. Any suggestions on a possible solution? Thanks.