Tip & How-To about Apple iPhone Smartphone

How to UNLOCK iPhone 4, 3GS, 3G or older - iOS 4.0.1 (all baseband)

(Updated April 2011)

This guide will help you unock your iPhone using ultrasn0w 1.3 to let you use sim cards from other carriers worldwide.
This is ONLY FOR JAILBROKEN iPhones. If yours is not yet jailbroken, CLICK HERE for guide on how to jailbreak.Ultrasn0w 1.3 unlocks the following basebands for all iPhones:

  • 01.59.00 - iPhone 4, iOS 4.0, 4.0.1 & 4.0.2
  • 05.13.04 - iPhone 3G & 3GS, iOS 4.0, 4.0.1 & 4.0.2
  • 05.12.01 - iPhone 3G & 3GS, iOS 3.1.3
  • 05.11.07 - iPhone 3G & 3GS, iOS 3.1 & 3.1.2
  • 04.26.08 - iPhone 3G & 3GS, iOS 3.0
  • 06.15.00 - iPad baseband, iOS 3.2.2 (for patching iPhone 3G & 3GS BBs past iOS 4.0.2) (?)
  • and all older versions
NOTE: 05.14.02 / 02.10.04 baseband from iOS 4.1 and all newer versions, do not have any unlocking tool yet. You can follow me on twitter (kid_ant) or subscribe to my YouTube channel (kidantvideos) for updates.Make sure you are connected to a WiFi signal then follow these steps:
  1. Open Cydia
  2. Go to Manage and tap on Sources, at the middle of the page
  3. Tap repo666.ultrasn0w.com (If the repo is not in your Sources read below)
  4. Tap ultrasn0w
  5. Tap Install, then tap Confirm
  6. Wait until the installation finishes
  7. Tap Reboot Device
After the reboot, you should get a signal for your sim carrier, wherever you are in the world. That means your iPhone is now unlocked.



If repo666.ultrasn0w.com is not in your Sources, do this first:
  • While in Cydia's Sources page, tap Edit (top-right corner)
  • Tap Add (top-left corner)
  • Type this on the text box: http://repo666.ultrasn0w.com (with the number zero NOT the letter "O" in ultrasn0w)
  • Tap Add Source
  • Tap Done (top-right corner)
Proceed to number 3 on the first part of this guide.

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1 Answer

iphone says no sim and no secerice


What iphone do you have .. and the no sim and no service problem is causing cause you do not have a sim card on your iPhone or you don't have a sim card that iphone supports it , What you have to do "Ask someone who knows how to use iphones and jailbreak them 'or search on youtube how to jailbreak iPhone', after jailbreak go to cydia and add a source of ultrasn0w 'search on google for that source' after you install ultrasn0w reboot your device then you can see your Sim card it's connected to your sim carrier / There are plenty of solutions on how to fix your problem , you better ask someone who knows how to use it your friends or someone on your family

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How can I unlock my iPhone 3GS?


Ultrasn0w is a program created by the iPhone Dev Team which provides an unofficial carrier unlock for jailbroken iPhones which means that you can use any sim card in your iPhone.

The current supported baseband versions for 3G/3GS for this unlock tool are 4.26.08, 5.11.07, 5.12.01, 5.13.04, and 6.15.00.MORE DETAILS

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Your phone must be jail broken and unlocked to use non AT&T sim card. Be sure you have correctly installed redsn0w and ultrasn0w unlocker. If you have recently updated your phone that will undo your jailbreak and unlock. You will need to reapply them for the version of your iPhone OS if they are available.

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