iPhone Dev Team hacker Musclenerd has confirmed that they’ve managed to fix ultrasnow compatibility issues with iOS 4.3.1 and posted a teaser shot of his iPhone running on T-Mobile with good Signal strength. This update is just for iOS 4.3.1 compatibility and ONLY unlocks the baseband that ultrasnow 1.2 currently supports. Please note that this is not a new ultrasnow version but a fix which will be pushed for making it compatible with iOS 4.3.1 firmware. Only those, who are already unlocked on older baseband will be able to take advantage of it. Take a look at Musclenerd's tweet on ultrasnow unlock below.





ultrasnow 1.3 / 1.2.1 will unlock baseband versions :

* iPhone 4 : 01.59.00
* iPhone 3GS : 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00.


Note : Baseband 05.14.02 and 05.15.04 will be still locked and you need to update your iPhone 3GS to baseband 06.15.00. However, you will lose your GPS (known issue) if you install the iPad (6.15.00) baseband. Currently, there is no unlocking for iPhone 4 baseband 2.10.01, 3.10.01, 4.10.01.

Dev Team is working hard to fix any last minute bugs. We will update you as soon as we get more information on new ultrasnow unlock tool.