Redsn0w 0.9.7 b6 was released by the Dev Team. The prior version was Redsn0w 0.9.7 b5. This new version is currently available with for only Mac OS. Redsn0w 0.9.7b6 for Windows version will be released later. Redsn0w 0.9.7 b6 fixes the Skype issues. You can use this to untethered jailbreak iOS 4.2.1 process with Redsn0w [...]

Redsn0w 0.9.7 b5 was released by the Dev Team. The prior version was Redsn0w 0.9.7 b4. This new version is currently available with for only Mac OS. Redsn0w 0.9.7b5 for Windows version will be released later. Redsn0w 0.9.7 b5 fixes the Bluetooth and all sandbox-related issues. You can use this to untethered jailbreak iOS 4.2.1 [...]

You can get iOS 4.3 untethered jailbreak if you preserve the iOS 4.2.1 iPSW and SHSH. Comex was planing to release untethered jailbreak tool for iOS 4.2.1 but failed to do so and was provided through redsn0w 0.9.7. But, the above method needed 4.2 b3 hashes to achieve untethered jailbreak. As the below tweet conversations [...]

Redsn0w 0.9.7 b4 is out and available for Download. Dev Team released few hours back. Redsn0w 0.9.7 b4 is not a proper beta version, It is a testing stage version to test the embedded usbmuxd Users who weren’t able to run python script need to be careful. You can use this to untethered jailbreak iOS [...]

Redsn0w 0.9.7 b3 to jailbreak iOS 4.2.1 untethered is released. Redsn0w 0.9.7 b2 was released few hours back. Now we have Redsn0w 0.9.7 beta 3 version which is upgrade of beta 2 and also includes some fixes. If you faced problem when using Redsn0w 0.9.7 b2, I suggest you try using Redsn0w 0.9.7 beta 3 [...]