Ultrasn0w 1.2.3 can unlock iPhone 4, 3GS iOS 4.3.3 firmware. This UltraSn0w unlock for iOS 4.3.3 comes with older baseband supports, no new iPhone baseband. It just fixes the iOS 4.3.3 compatibility issues.
Ultrasn0w 1.2.2 can unlock iPhone 4.3.2 firmware on iPhone 4 and iPhone 3GS. This UltraSn0w unlock does NOT include any new iPhone baseband sport, instead, it just fixes the iOS 4.3.2 compatibility issues.
UltraSn0w 1.2.1 has been fixed to unlock iOS 4.3.1 on previously unlockable Basebands. These are the steps to unlock iOS 4.3.1 with UltraSn0w on iPhone 4 and iPhone 3GS. Before unlocking iOS 4.3.1 on iPhone 4 and iPhone 3GS, read the important part first.
MuscleNerd, in tweet, hints that they are working on downgrading Baseband 06.15.00 to 05.13.04. In a reply to one of his followers, Musclenerd says that they are working on downgrade iPhone 3GS baseband 06.15.00 to 05.13.04 rather than an unlock for baseband 06.15.02, 05.14.02, or 05.15.04.
MuscleNerd, the man behind UltraSn0w unlock confirms that iPhone 4 iOS 4.3 baseband 04.10.01 has some possible vulnerable commands that may lead to an unlock for iPhone 4 baseband 04.10.01. Dev-team is working hard to invoke those commands to unlock iPhone 4 on iOS 4.3.
Any iPhone 3G, with baseband 06.15.00, is now unlocked for life. Since iPhone 3G won’t be getting any firmware update starting iOS 4.3, your iPhone 3G will remain unlocked for life. MuscleNerd also confirmed this in a tweet:
MuscleNerd of iPhone Dev-Team has just confirmed that the no UltraSn0w unlock for iPhone 4, 3GS will be released until after 4.2.5 or official 4.3 (whichever is last) is out. This is what MuscleNerd just tweeted:
Sherif Hashim in a tweet has confirmed that iPhone 4 unlock for Baseband 02.10.04 and 03.10.01 is now less than a month away. Someone asked Sherif via twitter if he could get the iPhone 4 unlock before Jan 16. Checkout the hacker’s response after the jump…
UltraSn0w 1.2 is out to unlock iPhone 3Gs/3G iOS 4.2.1. This guide is on how to unlock iPhone 3GS or 3G iOS 4.2.1 baseband 006.15.00 with UltraSn0w. iPhone 3GS / 3G unlock instructions can be found below.
iOS 4.2.1/4.1 unlock for iPhone 3GS and iPhone 3G will drop by Sunday, 28th November, according to MuscleNerd. UltraSn0w will unlock iPhone 3GS/3G on iOS 4.2.1/4.1 on Sunday, however, iPhone 4 unlock will take little longer.
After Limera1n, GeoHot is going to amaze us all over again with LimeSn0w, a potential unlock for iOS 4.1 on iPhone 4, 3GS and 3G. The screenshot and video below [Fake?] shows iPhone 3GS iOS 4.1 baseband 05.15.01 unlocking with LimeSn0w installed via Limera1n just like BlackSn0w was available via Blackra1n.
iPhone Dev-Team has updated UltraSn0w unlock for iPhone 4, 3GS and 3G to version 1.1-1. UltraSn0w 1.1-1 fixes the poor standby battery life for all those who unlocked iPhone 4, 3GS or 3G with earlier UltraSn0w 1.0-1 version.