Unlock 4.3.3 iPhone 4 iPhone 3GS With Ultrasn0w 1.2.3 Released


by casey on May 7, 2011

iPhone Dev Team has released Ultrasn0w 1.2.3 to unlock iOS 4.3.3 on iPhone 4 and iPhone 3GS. The unlock tool was previously broken on the latest 4.3.3 firmware. Now it 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

Remember you need to have a jailbroken device first. To jailbreak your device on iOS 4.3.3, you need to visit the following links.

Jailbreak iOS 4.3.3 Untethered with Redsn0w 0.9.6 RC15

Jailbreak iOS 4.3.3 Untethered with Pwnagetool 4.3.3 for Mac

Jailbreak iOS 4.3.3 on Windows iPhone iPad & iPod touch with Sn0wbreeze 2.7

Unlock iOS 4.3.3 iPhone 4 3GS with Ultrasn0w 1.2.3

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”

ultrasn0w 1.2.3

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.

ultrasn0w unlock


Thats it! Congratulations! 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. Kindly DO NOT use it other than the mentioned basebands.

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  • http://twitter.com/MRSM00TH20 Sami hassan

    r we gonna see unlock for this 05.16.02 baseband ??? pls answer !!n

  • Balix20

    We need the solution for 05.16.02 please

  • Anonymous

    We need the solution for 05.16.02 pleaseFlagplz tell me fast

  • Anonymous

    plz gve idea abt
    05.16.02 base band to unlock

  • 007

    u00a0Hi, thanks for all this. Good job. I have a quick question: why this tool can not be used on devices running with firmwareu00a0u00a004.10.01? Can you explain why ? Best,

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