3.1.3.. but i also have an iphone 3g? that is unlocked to 3.1.2. Now i've heard of downgrading if you save the SHSH file on cydia but i have no idea how to do that and im wondering if its possible if i save the file with my 3g thats unlocked to 3.1.2 and use that saved shsh for my 3gs if i were...
