i want to upgrade i have a few questions plz help

[yalvarez]

i have a iphone 3gs

version 3.1.3
firmware 05.12.01

the i phone is unlock i want to upgrade to 4.3.1 but im afraid the phone is going to get lock

what i want to know wich one is the rigth program for this like theres alot of programs to unlock

 

[Gregoris]

use either pwnage tool or sn0wbreeze so you can preserve the baseband.

 

[yalvarez]

use either pwnage tool or sn0wbreeze so you can preserve the baseband.

ok im trying to install the 4.3.1

" iphone could not be restore bc firmware is not compatible "

what i have to do plzz help

i have the programs but im having problems isntalling 4.3.1

 

[bab2010]

i have a iphone 3gs

version 3.1.3
firmware 05.12.01

the i phone is unlock i want to upgrade to 4.3.1 but im afraid the phone is going to get lock

what i want to know wich one is the rigth program for this like theres alot of programs to unlock

you can not upgrade to 4.3.1, you can only upgrade to 4.3.3 for now, after upgrading to the version of iOS 4.3.3, you will need to download the ipsw 4.3.3 manually into your computer, also you will have to download the latest redsnow tool to your computer, then you will be able to jailbreak. Remember that there is no way for you to get version 4.3.1 installed on your phone.