
iPhone Dev-Team Releases Jailbreak for iOS 4.2.1
Posted November 23, 2010 at 10:17am by
Shalom Levytam
The iPhone Dev-Team has released a new version of RedSn0w to jailbreak iOS 4.2.1
The jailbreak is currently tethered for most devices except for the iPhone3G, older iPhone3GS, and non-MC iPod touch 2G.
Comex is working on a way to untether the jailbreak for newer devices but it will require you to have your 4.1 SHSH blobs in order to use it.
Both Cydia (within redsn0w 0.9.6b4) and MobileSubstrate (install via Cydia) are now 4.2.1 compatible.
You can download Redsn0w 0.9.6b4 from here:
● Mac
● Windows
We will be posting a tutorial on how to use the new version of RedSn0w very shortly.

The jailbreak is currently tethered for most devices except for the iPhone3G, older iPhone3GS, and non-MC iPod touch 2G.
Comex is working on a way to untether the jailbreak for newer devices but it will require you to have your 4.1 SHSH blobs in order to use it.
Both Cydia (within redsn0w 0.9.6b4) and MobileSubstrate (install via Cydia) are now 4.2.1 compatible.
You can download Redsn0w 0.9.6b4 from here:
● Mac
● Windows
We will be posting a tutorial on how to use the new version of RedSn0w very shortly.

![iFixit Teardown Reveals How Touchscreen MacBook Pro's Glowing Apple Logo Works [Video] iFixit Teardown Reveals How Touchscreen MacBook Pro's Glowing Apple Logo Works [Video]](/images/news/103434/103434/103434-160.jpg)


![Ring Announces Flying Drone Cam and Rover Security Robot [Video] Ring Announces Flying Drone Cam and Rover Security Robot [Video]](/images/news/103425/103425/103425-160.jpg)

![How To Back Up Your iPhone to an External Drive on Mac [Video] How To Back Up Your iPhone to an External Drive on Mac [Video]](/images/tutorials/72786/72786/72786-160.jpg)
![How To Sideload Apps Onto Your iPhone Using Xcode [Video] How To Sideload Apps Onto Your iPhone Using Xcode [Video]](/images/tutorials/52314/52314/52314-160.jpg)
![How To Find Your IP Address on iPhone [Video] How To Find Your IP Address on iPhone [Video]](/images/tutorials/496/496/496-160.jpg)




![Mac mini and Mac Studio Hit All-Time Lows, Up to $200 Off [Deal] Mac mini and Mac Studio Hit All-Time Lows, Up to $200 Off [Deal]](/images/news/103290/103290/103290-160.jpg)
![M5 MacBook Air Up to $200 Off, 13-Inch From $1,099.99 [Deal] M5 MacBook Air Up to $200 Off, 13-Inch From $1,099.99 [Deal]](/images/news/103233/103233/103233-160.jpg)
![Apple Watch Ultra 4 Drops Back to All-Time Low of $699.99 ($99 Off) [Deal] Apple Watch Ultra 4 Drops Back to All-Time Low of $699.99 ($99 Off) [Deal]](/images/news/103218/103218/103218-160.jpg)