This Tutorial will help you to unlock iOS 6.1 Ultrasn0w free unlocking tool that is compatible with older basebands, to preserve your iOS 6.1 base band you need to create custom iOS 6.1 iPSW using Redsn0w 0.9.15b3.
- Baseband 05.13.01 on iPhone 3GS
- Baseband 05.11.07 on iPhone 3GS
- Baseband 05.12.01 on iPhone 3GS
- Baseband 04.26.08 on iPhone 3GS
- Baseband 06.15.00 on iPhone 3GS
Just follow these simple steps and your job will be done without any difficulty
Step 1: Jailbreak your iPhone using our guide.
Step 2: Launch Cydia from your device.
Step 3: Go to Manage > Sources. Tap on Edit, which is located at the top right corner of the screen.
Step 4: Enter the following URL repository: http://repo,iparelhos,com
Step 5: Tap on Add Source.
Step 6: A package for ultrasn0w fixer 6.1 will be displayed. Tap on it to start installation.
Step 7: Download the official Ultrasn0w 1.2.7 tool and that’s it.
If you have some better solution please share it with us .