Quote:
Originally Posted by MX727
Jailbreaking and unlocking are two very different things. Jailbreaking is as, AV8OR said, beyond simple. Google jailbreak and you will find tons of info. I used Quickpwn and Cydia. Didn't use Installer as it doesn't seem as stable with the 3G. The phone works fine in iTunes and you can still get apps of of AppStore.
Jailbreaking is easily undone, just update the phone in iTunes.
Unlocking is all about using your phone on other carriers besides AT&T. That one is much more technical and cannot be easily undone. Last I read, unlocking is still more of risk on the 3G. The original iPhone can be unlocked easily.
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Not a tech guru so I might be wrong but I was told that jailbreaking is basically unlocking phones illegally. Your reply does make sense but if so, why did my friend's phone go dead when he downloaded the latest version via iTunes?
Some phones are OK to unlock and the phone company, such as Verizon might even help you if you request it. Some phones however they will not let you unlock (iPhone) so people do it on their own.
As far as reversing - if you'd read my previous post you'd realize that sometimes reversing works fine but sometimes it doesn't. My friends phone is still dead and AT&T refuses to help since he 'voided' his warranty by unlocking the phone.