Geohot’s Blackra1n RC3 now includes blacksn0w unlock. Good job Geohot on figuring out how to unlock the 3.1.2 baseband so fast! I have updated the blackra1n guide to include instructions on the unlock. Instructions are quite simple though. Just install the sn0w option when installing cydia or rock. Also, thankfully, Geohot has removed the buggy Icy from the RC3 build.