Jailbreak your iPhone

Unlock iPhone 3G, 3GS iOS 4.0.1


As you know Apple dropped iOS 4.0.1 for iPhone 3G, iPhone 3GS and iPhone 4 in response to wrong signal calculation. This is a minor update and no major changes in baseband update and jailbreak protection, at least for iPhone 3G. We already posted a complete how to guide on how to Jailbreak iOS 4.0.1 for iPhone 3G with Redsn0w. Following are the instructions to unlock iPhone 3G with iOS 4.0.1

Note : Ultrasn0w is being updated to fix Mobilesubstrate issue, hold for a little while. 


Instructions to install ultrasn0w using cydia

Step One : Press to launch Cydia Installer from your Springboard.

Step Two : Press to select the Manage tab at the bottom of the screen.

Step Three : Press to select the large Sources button

Step Four : Press the Edit button at the top right of the screen.

Step Five  : Press the Add button at the top left of the screen.

Step Six : Enter http://repo666.ultrasn0w.com as the source url and press the Add Source button.Note:ultrasn0w is spelled with a zero, not the letter “o”.

Step Seven : Once the source has been added press the large Return to Cydia button.

Step Eight : Press the Done button at the top right of the screen.

Step Nine : Press to select http://repo666.ultrasn0w.com/ from the list of user entered sources.

Step Ten : Press to select ultrasn0w from the list of packages.

Step Eleven : Press the Install button at the top right of the screen.

Step Twelve : Press the Confirm button at the top right of the screen.

Step Thirteen : After installation completes successfully press the reboot.

Step Fourteen : Now press the Home button then power off and power on the iPhone. You do this by holding down the power button for 3 seconds then moving the power slider that appears to the right. Press the power button again to turn on the phone.

Step Fifteen : You should now be able to insert the SIM of your choice!


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Comments ( 12 )

Have Something To Say ?

  1. Denzel October 11, 2010 Reply

    Doesn’t work on my 3G 4.0.1 🙁 Help me and the otherz PLZ

  2. Mr. Do! September 22, 2010 Reply

    Thanks for the detailed instructions. I hadn’t realized that jailbreaking and unlocking were separate steps until reading through your directions.

  3. Phillip Frech September 18, 2010 Reply

    Hello, Can the human female, the iPhone 3Gs 4.0.1 Jailbreak with DM ultrasn0w after unlocking?

    Thanks in advance

    Phillip Frech

  4. jonathan August 18, 2010 Reply

    ok so im on 4.0.2 and am now jail broken but I can not get wifi to work and I currently have no access to an active att sim card. what ca i do I have done the network reset and reboot to no avail.

  5. Zebratov August 17, 2010 Reply

    Thank you!!!
    very good!!!

  6. Sinisa August 15, 2010 Reply

    I have 3gs and dont have original sim so after update on 4.0.1 firmware 05.13.04 activate with dits phonebook sim card and do cyntia unlock with ultras0w 1.1-1 and reboot it when put sim come different SIM detected please connect to itunes and slide for emergency , have also network to receive calls and sms. how to move that mode

  7. waqar August 3, 2010 Reply

    it works really very cool and i unlock my phone with in a five min.
    Thanks for ur help really appreciate.

  8. Iadorellamas August 2, 2010 Reply

    Will this unlock work with the jailbreakme software using an iPhone 3GS?

  9. Mandy July 20, 2010 Reply

    I tried the above on my iphone 3g 4.0.1 and i just get “no service” in the top left hand corner?

  10. kiziol July 19, 2010 Reply

    it does not work!!!

  11. Akthar July 19, 2010 Reply

    Dude did any one tried yet????????

  12. Milton July 16, 2010 Reply

    It actually worked…. your instructions were very clear and precise. thanks a ton…

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