iPhone 4 unlock software Ultrasn0w 1.0-1 was releasedrecently which now unlocks iPhone 4 baseband 01.59.00. The new Ultrasn0w 1.0-1 is a carrier unlock for iPhone 4, iPhone 3G and iPhone 3GS that will unlock SIM of all iPhones along with iPhone 4. It unlocks baseband 04.26.08, 05.11.07, 05.12.01, and 05.13.04 on iPhone 3G and iPhone 3GS. Follow the simple steps listed below in order to unlock your iPhone.
How to Unlock iOS 4.0.1 iPhone 4 baseband 01.59.00 with Ultrasn0w 1.0-1
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 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.
Voila! You have now successfully unlocked iPhone iOS 4.0.1 firmware running 01.59.00 baseband.
