Unlock iOS 4.0

by iPhoneHeat on Jun 18, 2010

Apple has pushed the iOS 4 (formerly iPhone OS 4.0) for both the iPhone and iPod Touch to the developers. iOS 4.0 firmware will be released to general public on June 21st. Dev-Team has already released UltraSn0w unlock for iOS 4.0 GM on Baseband 04.26.08. BlackSn0w RC2 had already unlocked iPhone 3GS running iOS 4.0 firmware on Baseband 05.11.07.

With the release on UltraSn0w 0.92.1, Dev-Team has said that they have UltraSn0w unlock ready for both 05.12.01 baseband at OS 3.1.3 and the all new baseband 05.13 of iOS 4.0 and iPhone 4 as well. They are holding it until the iPhone 4 hits the shelves. So, a couple of weeks to go.

All the iOS 4 unlock guides will be listed below. So bookmark this page for future reference. We’ll update this post as soon as a new unlock iOS 4 guide is published on iPhoneHeat.com. Checkout the guides listed below to unlock iOS 4.0 on iPhone 3GS, 3G.

NOTE: In order to Unlock your iPhone 3GS, 3G running iOS 4.0, it must be jailbroken. You can fine iOS 4.0 jailbreak guides here:

How to: Jailbreak iOS 4.0

UNLOCK iOS 4.0 FIRMWARE

All the iOS 4.0 firmware unlock guides are listed under the concerned devices. Scroll down to your iDevice and follow the links listed under it to unlock your iPhone 3G, 3GS running iOS 4 firmware.

Unlock iPhone 4

iPhone 4 Unlock in works now!

Unlock iPhone 3GS

You can unlock iPhone 3GS iOS 4 GM firmware with both Ultrasn0w and BlackSn0w depending on your baseband (Check baseband: Settings> General> About> Modem Firmware). In order to do so, follow the step by step guide:

Unlock iPhone 3GS baseband 05.13.04

How to: Unlock iPhone baseband 05.13.04 with UltraSn0w
How to: Unlock iPhone 3GS baseband 05.13.04 with UltraSn0w

Unlock iPhone 3GS baseband 05.12.01

How to: Unlock Baseband 05.12.01 with UltraSn0w

Unlock iPhone 3GS Baseband 05.11.07

How to: Unlock iPhone baseband 05.11.07 with UltraSn0w
Unlock iPhone 3GS iOS 4.0 GM with BlackSn0w RC2

Unlock iPhone 3GS Baseband 04.28.06

Unlock iPhone 3G

You can unlock iPhone 3G iOS 4 GM firmware with both Ultrasn0w and BlackSn0w depending on your baseband (Check baseband: Settings> General> About> Modem Firmware). In order to do so, follow the step by step guide:

Unlock iPhone 3G Baseband 05.13.04