I have two Pro 668. One of the SD cards crapped out last year and I reformatted it and copied the info from the other card. Well the one I did, died today. Also, I am afraid I have too many channels entered as I am missing a lot of traffic. I wanted to see if someone was interested in formatting 2 SD cards, letting me email you the agencies/freqs I want entered, and mailing me the cards. I will be happy to pay for the cards and you time.