Previously we have updated you on Redsn0w 0.9.6rc7 release which was a one click tethered iOS 4.2.1 boot solution. This version was a helpful to ease the complexity of tethered jailbreak until Comex releases a better version of untethered iOS 4.2.1. We have also shown you a HOW TO GUIDE TO Quickly Boot Tethered Jailbroken iPhone iPad iPod Touch [Windows & Mac] using Redsn0w 0.9.7rc7. Now Redsn0w 0.9.7rc8 has been released and it offers bug fixes present in the rc7 version.
Specifically, the custom tethered boot logo commands will now show that why an invalid PNG file is attempted. It will report a clear message notifying you the reason of invalid PNG image. The bug was reported by few users and iPhone Dev Team made a quick response by releasing Redsn0w 0.9.7rc8.
We appreciate the hard work by iPhone Dev Team as they have released the bug fix just after a couple of days it was reported.
You can use the new version Redsn0w 0.9.7rc8 for tethered jailbreak on iOS 4.2.1. If you do not know how to di it then here is a guide that we have made for our visitors. Step by Step How To Guide Quickly Boot Tethered Jailbroken iPhone iPad iPod Touch [Windows & Mac] using Redsn0w 0.9.7.