หัวข้อ: ปลดล๊อก iPhone 3gs 4 ios6.1

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Unlock iOS 6.1 with ultrasn0w fixer [Tutorial]
Ultrasn0w is free unlocking tool that is compatible with older basebands, to preserve your iOS 6.1 baseband you need to create custom iOS 6.1 iPSW using Redsn0w 0.9.15b3.

Baseband 01.59.00 on iPhone 4
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

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.

source : www.unlockboot.com]