arrow button. Click the arrow. On the next screen you should see a browse button. Click the browse button and select the 4.0.1 firmware.
The app will check the firmware and enable the blue arrow button. Click the arrow. On the next screen you will be asked if you want to install Cydia, Installer and if you want to replace boot logos. Check Cydia. Doing that it will enable the blue arrow button. Click the arrow. Now the app will tell you to make sure your iPhone 3g is plugged into the computer. Now you want to click the blue arrow button and the app will put your phone into recovery mode. Now the app will tell you to hold the Home button for 5 seconds. Then hold the home and power buttons for 10 seconds. Now release the Power button and continuing holding the home button until your iPhone is in DFU mode. Once you have done that the jail breaking will start. Will it is done restart your Iphone 3g and you will have a jail broken Iphone 3g. You will have Cydia on your have screen. Click on the Cydia icon and wait for everything to load. Now click the manage button and the botton of the screen, then click sources then edit and add. Enter http://repo666.ultrasn0w.com/ then click add source. When it its finish click return to Cydia. Now click the http://repo666.ultrasn0w.com/ source, then click ultrasn0w and install
it. When is done installing restart your iPhone 3g and you phone will be jail broken and unlocked.