How To: Unlock iPhone 4

Finally! Dev Team released the Unlock Solution!


Dev Team is happy to tell you that their ultrasn0w carrier unlock now supports the iPhone4!
Version 1.0-1 of ultrasn0w works for:

• iPhone4 baseband 01.59
• 3G/3GS basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04

Step 1 - Jailbreak your iPhone 4 using JailbreakMe 2.0 star. (You can refer our guide on How to Jailbreak iPhone 4, 3GS, 3G iOS 4 / 4.0.1 and iPad 3.2.1 with JailbreakMe 2.0 star)
Step-2 - Start ‘Cydia’ on your jailbroken iPhone 4 iOS 4.0.1 springboard.
Step 3 - Select ‘Manage’ tab at the bottom of your iPhone screen and then select ‘Sources’.
Step 4 - Select ‘Edit’ and then select ‘Add’. Now enter a URL source. Type ‘repo666.ultrasn0w.com‘ and select on ‘Add Source’. Once Cydia has added the source click on ‘Return to Cydia’ button.
Step 5 - Once the installation is completed. Search for ‘ultrasn0w 1.0-1′ in Cydia and install it.
Step 6 - This app will automatically unlock your jailbroken iPhone 4 baseband 01.59.00 easily.
Step 7 - Reboot it.