how to upgrade a jailbroken/unlocked iphone 3gs form firmware 3.0 to 3.1.3?

M

masouddurani

New member
I have an Iphone 3gs which is jb/uL. The firmware is the original 3.0. i would like to upgrade it to 3.1.3 and keep the jb/uL features. Please advise accordingly.
 
Top