Unlock iPhone 3GS iOS 4.0 with UltraSn0w | Unlock iOS 4

Unlock iPhone 3GS iOS 4.0 with UltraSn0w

UltraSn0w Unlock has been released to unlock iPhone 3GS iOS 4.0 with 04.26.08 baseband and old BootRom. Indeed a great news for loyal dev-team followers who used PwnageTool to update firmware but preserved their baseband at 04.26.08.

Update: UltraSn0w 0.93 is out now! and it can Unlock all Basebands.. Check the Updates at the bottom.

ultraSn0w unlockSo, all those with iPhone 3GS baseband 04.26.08 running iOS 4.0 (formerly iPhone OS 4.0) installed via PwnageTool, can unlock 3GS with UltraSn0w.


  • To unlock 3GS with UltraSn0w, your iPhone must be jailbroken. (Jailbreak Guides linked at the bottom)
  • Your iPhone 3GS MUST be at 04.26.08 baseband (You can preserve Baseband with PwnageTool during firmware update)
  • This works for iPhone 3Gs with Old BootRom only.
  • 05.11.07 baseband users can always use BlackSn0w RC2.
  • 05.12.01 baseband users need to wait a couple of weeks more. Unlock is ready. They are waiting for iPhone 4 to hit shelves.

Let’s unlock your iPhone 3GS running iOS 4.0 GM firmware with baseband 04.26.08 using UltraSn0w 0.92.1. Please follow the steps mentioned below…

How to Unlock iPhone 3GS iOS 4.0 with UltraSn0w

  • 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://ios4.ultrasn0w.org and hit the Add Source button.

ultrasn0w unlock

  • 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.

ultrasn0w unlockultrasn0w unlock

Installing UltraSn0w 0.92.1 will unlock iPhone 3GS iOS 4.0. Once the installation is completed, reboot your iPhone.

Voila! You have unlocked your 3GS and can use SIM from any carrier now.

Unlock iOS 4.0

All guides to unlock iPhone 4, 3GS, 3G are posted here:

Jailbreak iPhone 3GS iOS 4.0

to jailbreak iOS 4.0 on iPhone 3GS you can follow the guides linked below:

Also checkout:

Update 1: UltraSn0w 0.93: Unlock iPhone 3GS, 3G (All Baseband)

Update 2: Unlock iPhone 3G iOS 4 with UltraSn0w 0.93

Update 3: Unlock iPhone Baseband 05.13.04 with UltraSn0w 0.93

Update 4: Unlock iPhone Baseband 05.12.01 with UltraSn0w

Update 5: iPhone 4 Jailbreak is almost ready.

Update 6: iPhone 4 Unlock in works now.

Update 7:

UltraSn0w 1.0-1 is OUT now.
How to: Unlock iPhone 4 iOs 4.0.1 Baseband 01.59.00 with UltraSn0w 1.0-1
unlock iPhone 4

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