Updating an unlocked iphone 3g
It injects the payload at boot and also whenever there is a baseband reset.You won’t notice anything about it other than that your third-party sim now works.And if i'm actually able to update ios and baseband will i lose my factory unlock?IOS 4.2.1 is the last OS supported on your i Phone 3G.
Press the power button again to turn on the phone.10.
The latest version of Ultra Sn0w has made its way to Cydia, and it supports the latest publicly available i Phone firmware, i OS 5.0.1.
You will still need an unlockable baseband to utilize ultrasn0w, but if you meet the requirements, it is now possible to unlock your i Phone 4 or i Phone 3GS running i OS 5.0.1…As promised, the i Phone Dev Team released an update to the Ultra Sn0w unlock for i OS 5 today.
Once you have a Jailbreaked i Phone then you can use these easy steps to Unlock your i Phone.
Note: This unlocking guide will work for you only if your Modem Firmware (Baseband) version is .
The following step-by-step tutorial will help you unlock your i Phone 3G and i Phone 3GS with the latest i Phone 3.1.2 firmware using ultrasn0w.