Nerds who don’t have an Apple developer account, are crying and searching for a way to install iOS 6.0 in their iPhone. Don’t worry, today everythingApplePro released a video, which shows how to install iOS 6.0 in your iPhone, w/o a developer account.
The below video shows the the procedure. Please note, I have not tried myself, I am just sharing the video tutorial by everythingApplePro. I am not responsible for if any issue occurs in your phone.
You can read the detailed tutorial here.