Redsn0w 0.9.7b2 For iOS 4.2.1 Untethered Jailbreak Released, Fixes Native App Crashes

iPhone Dev Team had released Redsn0w 0.9.7b1 that implements the “backup plan” for iOS 4.2.1 untethered jailbreak for iPhone 4, iPad and iPod touch 4G.
It was meant only for beta testers and not for the general public as there are still some known issues that need to be addressed. However, users who tried the beta version reported a number of issues. Dev Team has promptly released a new version of Redsn0w to address some of the issues.
Beta testers reported a number of issues such as:
iPod app is not working for iPhone 4 and iPad users
YouTube app is not working for some users
Users reporting issues playing videos from the camera roll
AirPlay is not compatible
Users have reported that some iOS apps are crashing
Dev Team has just released Redsn0w 0.9.7b2 that addresses the issues observed with native apps including the problem with Task switcher.
In a blog post, Dev team has provided the following details for beta testers:
The second beta is now available (testers ONLY please!). This version should fix all the native app crashes (including Task switcher). That’s the only change in from beta1….Bluetooth is still disabled. If you had trouble using the usbmuxd in beta1, please wait until we incorporate that into redsn0w itself (i.e. don’t bother trying this beta2, just wait for the integration).
We would like to again reiterate that Redsn0w 0.9.7 beta is still not meant for general public so stay away until all the issues are resolved if you are not interested in being a beta tester. Redsn0w 0.9.7 beta is currently available only for Mac users, Windows users will have to wait for public release of Redsn0w 0.9.7.
If you plan to beta test it then download Redsn0w 0.9.7b2 for Mac using this link (Dev Team has advised beta testers to test it after a fresh restore). Please don’t forget to let us know how it goes in the comments and also provide your feedback on Dev Team’s blog, which will help them to iron out the issues before the public release.

source dev team