What is an img3 file and how do I open an img3 file?
IMG3 is a system file used by iPhone and iPod. It contains an encrypted image that is used for loading core system software and data, and can be found within iPhone software update (IPSW) files; sometimes edited by users for creating jailbroken iPhones.
Relevant img3 file links:How to open img3 file on Youtube
How to open img3 file on Wikipedia
How to open img3 file on Microsoft.com