...iphone 3gs 3.1.3? Telstra will not let me because of stupid unfair reasons so i found some phone repair shops that unlock them for you but only up to my model 3.1.3 because 'apple needs to release' something. i read on an info website about unlocking iphones that i could downgrade my software by 'saving the SHSH blob of my device with Cydia' whatever THAT means and then take it to the shop to unlock. and i guess i could work that out but just incase anyone has the roughest idea when i can just get my version unlocked or if i can in the future at all and if its worth the wait that would be great! 
kiah
kiah