This post will show you how to Unlock iPhone 3G running 3.1 firmware using Ultrasn0w which is a utility on Cydia that allows iPhone 3G users to unlock their devices, which means they can use it with any Carrier.
- Jailbreak iPhone 3G 3.1 Firmware
- Connect to a WiFi network so you can use software repo’s in Cydia
- Open Cydia, it may require restart for the first time
- Go to the Manage tab on the bottom, then Sources
- Now hit Edit, then hit ‘+’.
- Now type in the following: http://repo666.ultrasn0w.com/ then hit Done.
- Now go to the Search tab and search for Ultrasn0w
- Install it, then restart your iPhone with your SIM Card in the device (if not working, re-insert your SIM card.
- Enjoy your Unlocked iPhone 3G!
