need help on my 3G
even though its my first post but im not really new to this forum. i did fair amount of my iphone researching here whenever i need them.
but i cant seem to find the exact answer i need this time
i have a jailbroken/unlocked iphone 3g with iOS 3.1.3, it has been running reallly slow recently and freezes quiet frequently. i thought i will just update to the latest jailbreakable iOS and jailbreak/unlock it to see if it can fix the problem. but i read that iOS 4 would make it hard/impossible to unlock, and i also remember iOS4 was very slow on my 3g and i eventually downgraded back to 3.1.3.
so I am wondering which iOS i should use if i have to unlock it?