[HOW-TO] UNLOCK IPHONE 4 / 3GS ON IOS 4.3.3 USING ULTRASN0W V1.2.3

Ultrasn0w 1.2.3 has been expelled currently to have the clear concordant with iOS 4.3.3 upon iPhone 4 as well as 3GS, regulating upon the aged baseband.

It should be remarkable yet which this recover of Ultrasn0w is not the brand new clear for iPhones with newer basebands, instead, it usually fixes the harmony issues upon the existent devices, which have been jailbroken (with recorded basebands: 01.59.00 / 04.26.08 / 05.11.07 / 05.12.01 / 05.13.04 / 06.15.00) upon iOS 4.3.3.

For iPhone 3GS Only: How to Update iPhone 3GS to 06.15.00 Baseband for Unlock: Ultrasn0w 1.2.x unlocking requires which your iPhone 3GS is jailbroken with 06.15.00 baseband. Follow the finish guide posted here (with PwnageTool) or here (for Redsn0w) to refurbish your iPhone 3GS baseband to 06.15.00 as well as jailbreak it upon iOS 4.1 / 4.2.1 prior to move with the following steps.

Note: Updating iPhone 3GS baseband to iPad’s 06.15.00 competence outcome in detriment of GPS functionality.


Step 1: First up, we will have to jailbreak your iPhone 4 or 3GS upon iOS 4.3.3 as well as safety the aged baseband regulating possibly PwnageTool upon Mac, or Sn0wbreeze upon Windows. Instructions upon how to jailbreak iOS 4.3.3 regulating PwnageTool can be found here, as well as for Sn0wbreeze can be found here.

Step 2: Once we have been finished with the jailbreak, we can right away clear your iPhone upon the upheld basebands regulating Ultrasn0w 1.2.3 from Cydia. To do this:

• Start “Cydia” on your iPhone.
• Touch on “Manage” tab upon the bottom.
• Now hold on “Sources”. 

• Touch on “Edit” and afterwards on “Add”. You will be stirred to come in the url source as seen in the screenshot below. Type “http://repo666.ultrasn0w.com” and hold on“Add Source” to supplement this repo if we haven’t already.

Cydia will right away automatically refurbish your sources by following the array of programmed steps.

• After designation is completed. Search for “ultrasn0w 1.2.3” in Cydia as well as implement this application. This app will automatically clear your iPhone so which we can make use of it with any carrier.

Step 3: Now simply restart your iPhone as well as voila! we should right away have the entirely unbarred iPhone 4 or 3GS, regulating iOS 4.3.3 !