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How to: Unlock iPhone 3GS on iOS 4.1 Using Ultrans0w

After releasing the new iOS 4.1, we showed you yesterday how to jailbreak your iPhone 3GS running iOS 4.1 using PwnageTool method, today I will show you how to unlock your iPhone 3GS on iOS 4.1 with ultrasn0w to use it with any carrier.

STEP 1: You should have a jailbroken iPhone 3GS on iOS 4.1 using PwnageTool ONLY, you can follow the step by step guide to jailbreak iPhone 3GS on iOS 4.1 posted here.

STEP 2: After Jailbreaking, Navigate to Cydia Source by Going to Cydia –> Manage –> Sources.

STEP 3: Touch on “Edit” and then on “Add”. Type “” then hit “Add Source”. Ultrasn0w will be added to your Cydia Source lists.

STEP 4: After you install Ultrasn0w in your Cydia sources list, Search for “ultrasn0w 1.1-1” and install this app, and it will automatically unlock your iPhone 3GS on iOS 4.1.

STEP 5: Restart you iPhone, Done.

Congratulations, Now you have a Jailbroken and Unlocked iPhone 3GS on iOS 4.1 , you can now use your iPhone 3G with any carrier.

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