iPhone Dev-Team has successfully ported RedSn0w 0.9.7 Jailbreak Monte, the untethered iOS 4.2.1 jailbreak technique, to iOS 4.1 SHSH blobs. Now the Dev-Team is working on untethered iOS 4.3 Jailbreak by porting the same Jailbreak Monte-4.1 to iOS 4.3 beta.