Ultrasn0w 1.2.3 tool to unlock iPhone 4 and iPhone 3GS is now available. The unlock tool is fully compatible with iPhone 4 and 3GS devices running the latest iOS 4.3.3 firmware. It can NOT unlock higher basebands whose unlock is not possible right now. Its not a new unlock, it can only unlock lower basebands whose unlock was already possible but broken on iOS 4.3.3.

Compatible basebands with Ultrasn0w 1.2.3

iPhone 4: 01.59.00
iPhone 3GS: 04.26.08 / 05.11.07 / 05.12.01 / 05.13.04 / 06.15.00

DO NOT USE WITH the following basebands:

iPhone 4: 02.10.04 / 03.10.01 / 04.10.01
iPhone 3GS: 05.14.02 / 05.15.04 / 05.15.04 / 05.16.01 / 05.16.02

Jailbreak your device on iOS 4.3.3 using:

Unlock iOS 4.3.3 iPhone 4 and iPhone 3GS with Ultrasn0w 1.2.3 Guide:

Step 1: Launch Cydia on your jailbroken iPhone.
Step 2: Navigate to “Manage” and then “Sources”
Step 3: Now “Edit” and then “Add”. Type the repo: “http://repo666.ultrasn0w.com”. Now “Add Source”
Step 4: Once its done with installation, find “Ultrasn0w 1.2.3”. Select and to install the package. After that it will restart your device.

Your device is now unlocked on iOS 4.3.3 on basebands 01.59.00 / 04.26.08 / 05.11.07 / 05.12.01 / 05.13.04 / 06.15.00.

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