iPhone 3G

Normal or Unlocker?

Please download Normal release if you can legitimately activate you device via iTunes AND you don’t need carrier unlock.
If you don’t need carrier unlock there could be two possibilities: or your device is factory unlocked (as Italian iPhone 3G) or you are using the iPhone with the official carrier that sold you the device.
All other users should choose Unlocker firmwares because they need carrier unlock. Whited00r Unlocker firmware works perfectly on iPad Baseband 6.15.00.

If you are not sure use Unlocker firmwares (but if you really don’t need carrier unlock, using the normal release is better).
Unlocker firmware need a Push-Notifications patch after the installation.

You baseband will not updated during whited00r installation, so you can preserve your unlock-able baseband.

Whited00r Download

iPhone 3G Normal 5.1
iPhone 3G Unlocker 5.1

Apple Original Firmware

If you would like to restore an official un-modded firmware from Apple, here are the .ipsw that you need:
iPhone 3G 3.1.2
iPhone 3G 3.1.3
iPhone 3G 4.2.1