As I said in my last blog post, the Dev-Team have released the latest version of the ultrasn0w carrier unlock for the iPhone 4. Version 1.0-1 is now in Cydia and if it’s not then just add the repo666.ultrasnow.com repository. It works on the iPhone 4 with baseband 01.59 and on the 3G/3GS basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04.