Major Redsn0w Update Soon!
The news come from MuscleNerd himself. The famous jailbreak developer sent out the following from his Twitter account:
As MuscleNerd said, this is a significant feature upgrade to Redsn0w. Its main new feature is how people looking to jailbreak their iOS device will not have to download those humongous .ipsw files that current and previous versions of Redsn0w required.
Well, the new Redsn0w will only download the essential bits and pieces required for the jailbreaking an iOS device. These “bits and pieces” will be downloaded automatically from Apple’s servers and Redsn0w then applies the jailbreak. The tool automatically finds out which iOS device and which iOS version number is being run and it then applies tethered or untethered jailbreak depending on which kind of jailbreak your device supports.
From MuscleNerd himself:
it automatically fetches the important pieces directly from Apple (and caches them so that it never needs to re-fetch them again)
This auto-downloading and auto-selection of IPSW files is not for beta versions of iOS, so this will not work any of the iOS 5 betas. Instead, you will have to provide the IPSW file yourself. Once it has been selected from Redsn0w, it will be cached so you won’t have to download/select it again.