Updating an unlocked iphone 3g
You do this by holding down the power button for 3 seconds then moving the power slider that appears to the right.Press the power button again to turn on the phone.10.
IOS 4.2.1 is the last OS supported on your i Phone 3G.
Press to launch Cydia Installer from your Springboard.5.
Press to select the Manage tab at the bottom of the screen and touch on Sources6. You will be prompted to enter a url source as seen in the screenshot below. Cydia will now automatically update your sources by following a series of automated steps.8. Search for “ultrasn0w” in Cydia and install this application.
Before you can follow these instructions you must have a jailbroken i Phone if you haven’t jailbreaked your i Phone 3G then follow our guide on How to Jailbreak i Phone 3G on OS 3.1.2 Pwnage Tool.
Ultra Sn0w is a small daemon that is launched on boot.