hello I just got a new factory sealed iphone 3GS Version 3.1.3 Baseband 5.12.01 I just saved the shsh blobs for 4.1 through tinyumbrella But I want to jailbreak it and have the option to unlock it. (I will not unlock it at this time since I dont want to void the warranty). What methods should I use? A) Can I use pwnage tools 4.1.2 to restore the firmware to 4.0.1 even though I don't have the shsh blobs but I have the restore file? (iPhone2,1_4.0.1_8A306_Restore) B) Is there any reason to preserve the 5.12.01 baseband? C) What other options do I have? Thanks for your time.