Hi, I ran the 'spirit' JB on my 3.1.2 3GS (activated officially) with the new bootrom, and everything went smooth. I then installed blacksn0w RC2, and as soon as I inserted an unofficial SIM, I got an error message - 'Different SIM detected, Please connect to iTunes'. Its stuck at the 'connect to iTunes' page, but goes back to the springboard as soon as I remove the SIM. When it is on the 'connect to iTunes' page, in the top left hand corner, it shows that I have full cell signal from my unofficial SIM. There is no way to use an unlock with spirit? I did not even see any warning about this anywhere, and I do not have 3.1.2 SHSH backed up either (got the phone too late).