Good news jailbreaking fans — the iPhone Dev Team is up to their old tricks with an untethered jailbreak entering 'beta' for the iPhone 4, iPad and fourth generation iPod touch running iOS 4.2.1. The beta version of redsn0w uses a new 'backup method,' which is referred to as 'Jailbreak Monte' within the program. However, It is strictly for those who don't rely on their iDevice and don't need ultrasn0w carrier unlock according to the Dev Team.
Brave testers who want to join the program will need access to the iOS 4.2 beta 3 firmware for their iDevice of choice, a Mac (sorry Windows users: redsn0w beta is OS X-only for now), and have their iOS 4.2b3 SHSH blobs saved on file with Cydia. If you fulfill the criteria, then head on over to the iPhone Dev Team blog and get in on the action. As of writing the redsn0w jailbreak had seen its third update released in rapid succession, bringing redsn0w to 0.9.7b3.
Once the beta cycle is finished, the iPhone Dev Team intends to make redsn0w 0.9.7 a general release and remove some of the more complicated restrictions, as well as provide a Windows version of the program. God's speed and good luck to the Dev Team and their courageous beta testers. May jailbreaking come easy and custom apps flow forthwith, because we all know how annoying it is to rely on a tethered jailbreak reboot process, especially when playing with unstable apps and system hacks.Redsn0w iOS 4.2.1 untethered Jailbreak goes beta
Fuente: Download Squad