Upgrading unlocked 3G running on fw 3.1.3

backbraker25

macrumors member
Original poster
Dec 9, 2007
71
1
Hey guys, I've been out of the game for a while now and I need help on upgrading a 3G iPhone running on fw: 3.1.3 with baseband: 05.12.01 and maintain the unlock.

The two questions I would like answered are:

1. What is the highest fw I can take this phone to.

2. Where can I get instructions on how to go about doing so.

Any help would be greatly appreciated.
 

Crystal-RX

macrumors 68030
Dec 22, 2008
2,691
0
Seattle, WA USA
Hey guys, I've been out of the game for a while now and I need help on upgrading a 3G iPhone running on fw: 3.1.3 with baseband: 05.12.01 and maintain the unlock.

The two questions I would like answered are:

1. What is the highest fw I can take this phone to.

2. Where can I get instructions on how to go about doing so.

Any help would be greatly appreciated.
1. 4.2.1
2. Iclarified.com or/and redmondpie.com
 

Spectrum Abuser

macrumors 65816
Aug 27, 2011
1,377
47
I would keep it on 3.1.3. Although iOS 4.X did provide some new features such as folders and 'digital' zoom the speed de-performance is not worth it.
 
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