Today iOS 5 Beta 5 was released for Developers and the files were in .DMG format. Many people were having issues on how to extract the .IPSW from it. So I thought to do a short video on it, an hope this will solve all the problems.
If you are on Windows so then only perform the Steps other wise don’t.
iTunes 10.5 Beta 6(Download Link)
iOS 5 beta 6( Download Link)
Power ISO (Download Link)
Hope the video works. That’s the best I could do. If you need any thing more to be included just mail me at daudi[at]freakgeeks[dot]com or comment below.