hi all, my friend's father just bought 50 TI-92s,yeah 50, to resell, he said it cost him 160.00 with the service contract. I figure he got them at around 125. since the service contract is 36.00. <just some trivia> I was wondering... if his are ver 1.12, could I use a backup from a higher version on one that came with a lower version? I didn't save my original backup:-) terry