PwnageTool 4.01 has already been released to jailbreak iOS 4 on iPhone and iPod Touch. I have also provided an easy guide to make use of this new jailbreak tool on your iDevice.
If you upgrade the jailbroken and carrier unlocked iPhone to Apple’s new iOS 4 firmware, it will get locked permanently. To solve the problem of iOS 4 unlock, iPhone Dev team has released Ultrasn0w 0.93.
For those who don’t know, the ultrasn0w 0.93 supports new baseband i.e. 05.13.04. Now, there is no need to worry about baseband issues. Jailbreak your iPhone 3G or iPhone 3GS using PwnageTool 4.01 guide and unlock it with ultrans0w 0.93.
Guide to unlock iPhone 3G/3GS iOS 4 with Ultrasn0w 0.93
Requirements:
- Jailbroken iPhone 3G or iPhone 3GS
- Cydia
Steps to follow:
1. Open ‘Cydia’ tool on iPhone and select ‘Manage’. Go to ‘Sources’.
2. Select ‘Edit’.
3. Add following URL to repo directory.
Repo: repo666.ultrasn0w.com
4. Now, search for Ultrasn0w 0.93 in Cydia and install it on the phone.
5. Ultrasn0w 0.93 will unlock your iPhone running iOS 4.
6. Reboot the iPhone.
Hurray! Your iPhone is unlocked successfully.


when i try to restore the custom image… then there is nothing happening… just wait…. no progressbar.
after 5 mins there is an error
any idea? the phone is not in restore mode.
During the install it said “cannot activate cellular network”. installation continued. Rebooted without a hitch, and am showing ATT service. My question – is it unlocked ? Is there a way that I can tell without putting a T-Mobile SIM card into the phone?
Hey guys – follow up to my first comment/question. Buddy at work has T-Mobile. Switched SIMs … worked like a champ !
exellent, really works
thank you so much
is it work for 3Gs new bootroom ???
are u guys sure is this method works for new iphone 3gs 3.1.3 05.12.01 ?
[...] Unlock iOS 4 Firmware with Ultrasn0w 0.93 **Join our Facebook Fan Page.** [...]