Updating an unlocked iphone 3g
haven't upgraded to the latest firmware then then your options based on the version of your i Phone are mentioned below: 1st Gen i Phone: If you do not care about jailbreaking but only worried about unlocking your 1st gen i Phone then you can go ahead and update your 1st gen i Phone as the update does not touch the baseband of the 1st gen i Phone so your unlock will remain in place.
If you care about jailbreaking then you need to wait for the dev team to release updated versions of Pwnage Tool and Quick Pwn tools which will let you jailbreak your 1st gen i Phone running firmware 2.2.1. The latest version of Pwnage Tool for i Phone firmware 2.2.1 will help you to safely upgrade only the i Phone firmware to 2.2.1 and not the modem firmware.
Today the i Phone 3.1 update was released to the public. A guide on how to unlock i Phone 3.1 this will be up later....
This update fixes a lot of bugs that were present in the i Phone OS 3.0 firmware.
This Firmware comes with the stock Apple logo and Cydia.However to jailbreak your 1st gen i Phone you will need to wait for the dev team to release updated versions of Pwnage Tool and Quick Pwn tools which will let you jailbreak your 1st gen i Phone running firmware 2.2.1.i Phone 3G: The Dev team should soon release updated versions of their Pwnage Tool and Quick Pwn tools to jailbreak your i Phone 3G running firmware 2.2.1.All you have to do is download it, restore it and that’s it.