Freakgeeks has posted a video explaining about how to Create a custom IPSW firmware file from the .DMG extension.In the video, it is clearly mentioned,how easy is to be done with the help of Power ISO Software which is available to download free from below.
Now the question is ,
“Why you should know how to Create custom IPSW from .DMG ??”
The answer is when you download the files from itunes store then all files are in .DMG format but if you need to jailbreak your iDevice then you should know this.
Most recently,Apple has released the iOS 5 beta 2 and the files are in .DMG Format.So many iPhone,iPad and iPod Touch users have concerns left with creating the IPSW, below is the video which will solve your problem.
Required Resources to Create .iPSW from .DMG
1. —–> iTunes 10.5 beta 2
2.—–> iOS 5 b2 Download
3.——> Download Power ISO Software from <here.>
Please note: This Video is just for tutorial purposes and we will not guarantee if it will cause any damage to your system as we don’t know how well you see the method and apply it to your iDevice.This method is tested and is working successfully.
And, don’t use it on any other platform other than Windows.