Unlock iPhone 3GS 05.12.1 / 5.13.4 baseband with Ultrasnow 0.93
Finally, as per Dev Team, iPhone 3GS will be unlock if used by Ultrasnow. Yes many people around are waiting for this particular update. Ultasnow and Dev Team have done it. They have just confirm via Tweet where it is clearly mentioned that Baseband 5.12.1, 5.13.4 and older baseband 4.26.8 and 5.11.7 baseband has been fully unlockable.People who are using 5.12.1 baseband and 4.26.8 baseband iPhone 3GS were waiting for this particular unlock update and now Dev Team just announced it.
So guys, procedure is very easy.
1. First jailbreak your iPhone 3GS with Pwnage Tool and follow the Procedure from Here.
2. After that just follow the Unlock procedure with Ultrasnow and just when you search for the Ultrasnow 0.92, instead of that Search for Ultrasnow 0.93. and install it.
Installation will do the rest and after your iphone restarts, It will be Carrier unlocked for sure.