How to Unlock iPhone 4 iOS 4.0.1 / 4.0 (Baseband 01.59.00)

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After jailbreaking iPhone 4 you can unlock your iPhone as well for using SIM card of any carrier. UltraSn0w 1.0-1 is available to unlock iPhone 4 iOS 4.0.1 / 4.0 baseband 01.59.00. Lets see how to unlock iPhone 4.

NOTE:

  • Make sure your iPhone is already jailbroken or follow this guide to jailbreak iPhone 4 now.
  • Check the iPhone 4 baseband is 01.59.00. Tap “Settings” icon on iPhone 4 > “General” > “About”  and see the “Modem Firmware” value.
  • T-Mobile USA users disable 3G network, goto Settings > General >Network and turn the “Enable 3G” switch to OFF.
  • Try this guide at your own risk, we are not responsible for any damage or lose.

How to unlock iPhone 4 with UltraSn0w 1.0-1  iOS 4.0.1 / 4.0 Baseband 01.59.00.

Step-1

Open “Cydia” on your iPhone 4, tap “Manage tab” and then tap “Source” button.

cydia source

Step-2

  • Tap the “Edit” button, tap “Add” button and enter the following URL http://repo666.ultrasn0w.com and tap the “Add Source” button.
  • When source added to the Cydia successfully, tap the “Return to Cydia” and then “Done” buttons

type repo url

Step-3

Tap “Search” tab at the bottom and type “ultrasnow”, tap on search result for install option.

Installing UltraSn0wInstall UltraSn0w

Once installtion is finished reboot your iPhone 4 and you have unlock iPhone 4 basband 01.59.00 with ultrasn0w iOS 4.0.1 / 4.0. Now use SIM card of any carrier on your iPhone 4.

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Posted in: iPhone on August 22, 2010

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Comments:

  1. Qasim 25 August 2010 at 2:55 am #

    i am in UAE and getting the error repo666.ultrasnow forbidden.
    Is this blocked in UAE dubai?

    Reply
  2. johnni 26 September 2010 at 4:45 pm #

    i am in UAE and getting the error repo666.ultrasnow forbidden.
    Is this blocked in UAE dubai? how can i unlock it

    Reply
  3. wasterci 13 November 2010 at 1:14 am #

    Please help I have iphone 4 with 4.0.2 baseband 01.59.00.
    used limera1n to jailbreak and Ultrasn0w 1.0-1 to unlock

    I’ve tried it several times but it’s not working. I keep losing the carrier after about 5-10 minutes, I can make calls in this time but after I lose unlock it shows single bar,
    I am not able to make calls. It’s not showing the carrier. (tmobile)

    I have to reboot he phone to use another 5-10 minutes than same story.
    MY unlock is not permanent, any idea how to fix this?

    Should I upgrade to 4.1 with using tiny umbrella in order to keep the baseband 01.59.00. and try to unlock and jailbreak again?

    Reply

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