Sn0wbreeze 2.3b4 comes with MobileSubstrate and Ultrasn0w unlock fix for iOS 4.3 on iPhone 4 and 3GS. UltraSn0w is currently broken on iOS 4.3 firmware Because of MobileSubstrate issues. However, iH8Sn0w has fixed it for you guys and now UltraSn0w can unlock iPhone 4, 3GS (old basebands) iOS 4.3 after jailbreaking with Sn0wBreeze 2.3b.
Before unlocking iPhone 4, 3Gs on iOS 4.3 please read the important part below.
Important
- Ultrasn0w works for following basebands: 01.59.00 | 04.26.08 | 05.11.07 | 05.12.01 | 05.13.04 | 06.15.00 (How to check iPhone baseband)
- Ultrasn0w is NOT compatible with the following basebands: 02.10.04 | 03.10.01 | 04.10.01 | 05.14.02 | 05.15.04
- Upgrading your iPhone 3GS baseband to the 06.15.00 iPad baseband hack to unlock MAY cause you to lose your GPS! (How to: Update iPhone 3GS to Baseband 06.15.00)
- Sn0wbreeze 2.3b provides a tether jailbreak solution for iPhone 4, 3GS, iPod Touch 4G, 3G and iPad 1.
Follow the steps below to unlock iPhone 4, 3GS 4.3 with UltraSn0w after Sn0wbreeze 2.3b Jailbreak…
How to Unlock iPhone 4, 3GS 4.3 with UltraSn0w
Step 1
First of all jailbreak your iPhone 4 and 3GS on iOS 4.3 firmware using Sn0wBreeze 2.3b. we have already posted a detailed guide on how to create custom firmware using sn0wbreeze and jailbreak iPhone 4 and 3GS here:
How to: Jailbreak iOS 4.3 with Sn0wBreeze 2.3b
Step 2
Once your iPhone 4 or 3GS is jailbroken, you can now unlock iPhone 4, 3GS iOS 4.3 with UltraSn0w 1.2. To do so:
***T-Mobile USA users please disable 3G network first. (Settings >General >Network and turn the “Enable 3G” switch to OFF.)
- Open the Cydia.
- Go to manage Tab at bottom.
- Hit the big Sources button.
- Hit the Edit button on Top-Right
- Then Hit the Add button on Top-Left
- Then Enter the following URL: http://repo666.ultrasn0w.com and hit the Add Source button.
- Once the Source is added to the Cydia, hit the big return to Cydia button at bottom of the screen and then Done button.
- Go to Search tab and search for ultrasn0w and install it.
Installing UltraSn0w will unlock iPhone 3GS baseband 04.26.08, 05.11.07, 05.12.01, 05.13.04, 06.15.00 or iPhone 4 with baseband 01.59.00. Once the installation is completed, respring your iPhone.
Voila! You have unlocked iOS 4.3 on iPhone 4/3GS/with UltraSn0w and can use SIM from any carrier now.
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Also checkout:
- JailbreakMe 3.0 to Jailbreak iOS 4.3 Untethered!
- iPad 2 Jailbreak Has been Achieved!
- How to Jailbreak iOS 4.3 with Sn0wBreeze 2.3b
- Save SHSH Blobs for iOS 4.3 with TinyUmbrella [How to Guide]
- iOS 4.3 Jailbreak Untethered [Video Demo]
