iPhone 3G - iOS 4.0.1 upgrade

Okay just finished testing Jail Break on iOS 4.0.1 and yeah it works pretty fine with following steps -

1. ensure you have iOS 4.0 also available with you, 
2. upgrade your phone to iOS 4.0.1
3. use redsn0w to jailbreak, but do not point to 4.0.1, rather point to iOS 4.0 and let redsn0w do the needful
4. let you phone boot back to normal
5. connect to a WiFi spot and use Cydia to download and install Ultrasn0w
6. Damn that's done, you are through upgrading your Phone to 4.0.1 and unlocked it to suite your requirements.

For caution, please follow the steps in my previous blog -

iPhone 3G - iOS 4.0 upgrade

In case you need any help, please leave me a message on this blog.