last night, my JB 3GS (running 3.1.2) rebooted and stayed on the Apple logo. I was able to put it into DFU mode, when I connected it to iTunes, apple wants to update to 3.1.3 (shsh is not saved). Blackra1n does not recognize the iphone in DFU...cannot get it into recovery mode. I believe I have the "MC" model with (5.11.7 baseband)...any ideas???