Hi, I bought an iPhone 5 last week from Bangkok, a reputed store. Its a Korean made, because it has KCC-xxx-xxxx on the back panel, unlike the USA iPhones. Im able to install apps, connect to iTunes and do everything, but Im not able to UPDATE or RESTORE the iOS . I posted this on Apple Forums and they said, this phone might have been jailbroken or hacked to unlock, and its not a official unlocked by any carrier. So, how do we find this out, whether it was hacked or whatever ?