Software (and hardware) unlocks
Ultrasn0w unlocks the following basebands (and ONLY these basebands)
iPhone 3G and 3GS: 04.26.08, 05.11.07, 05.12.01, 05.13.04, and 06.15.00
iPhone4: 01.59.00 (Gevey sim will unlock basebands 2.10.xx, 3.10.xx and 4.10.XX, but not 4.11.xx)
iPhone 4S: none *
in November, 2011, MuscleNerd mentioned that a software unlock for the
iPhone 4S on firmware 5.0 with baseband 1.0.11 (and only this baseband
was mentioned) "might" be possible. No guarantee a
iOS 5 will be unveiled alongside iCloud and OS X 10.7 Lion.
Heres some possible changes that we may see in iOS5..
Better Notifications. According to TechCrunch,
Apple is planning on rolling out a “completely revamped” notifications
If after jailbreaking using Limera1n and you cannot see all your system files anymore via ssh/putty or a phone disk software or iFile, you can try this solution.
Try installing afc2add from Cydia.