Same thing happened to me. I also did have a software mod too.. In any case, RW-Everything somehow read it as 2.0 still. I didn't care too much to be honest. I installed windows 7, checked the SLIC table with RW-Everything and it was reported as 2.1 (go figure). Just make sure you do flash the bios with a properly modified one that does have SLIC v2.1.