If you have updated to iOS 4.0.1 and have jailbroken your iPhone 3G 4.0.1 using redsn0w 0.9.5, you can now unlock your iPhone 3G 4.0.1 using Ultrasn0w. Ultrasn0w was updated to version 0.9.3 to unlock iPhone running iOS 4 with baseband between 04.26.08 thru 05.13.04.
Ultrasn0w 0.9.3 is available in Cydia stores using the repo repo666.ultrasn0w.com. To add a repo go to the Cydia store and add it as a new repository. Read instructions to learn how to add a new repo to Cydia.
However, before you unlock your iPhone, you will have to jailbreak iPhone, learn how to Jailbreak iPhone 3G iOS 4.0.1. The only tool that can jailbreak iOS 4.0.1 right now is the redsn0w tool, which is available for both Windows and Mac users.
The Cydia store app will only be available after you have jailbroken your iPhone. If you are unable to jailbreak your iPhone yet, stay tuned, we will post the latest details on jailbreaking your iPhone running iOS 4.0.1 shortly. In other news iOS 4.1 jailbreak for iPhone 3GS sn0wbreeze will be out soon and the iOS 4.1 Unlock too is expected soon. To stay updated with the latest jailbreak and unlock news, don’t forget to subscribe to our mobile news.