I am new to pwning the iPhone, but have read up as much as possible before asking this question. I have a 1st Gen and am unlocking for a buddy to use on T-Mobile. I don't really need the third party apps, as the app store is enough for me. I just need to unlock the phone. I have watched videos and reviewed other threads about unlocking and jailbreaking the iPhone with the Pwnage Tool. I know how to do what I am looking for...just go into the expert mode and deselect the Installer Beta and Cydia, but I was wondering if there are an adverse effects to using the Pwnage Tool to only unlock the iPhone. thanks.