February 11, 2026
iPhone Dev-Team Releases Jailbreak for iOS 4.2.1

iPhone Dev-Team Releases Jailbreak for iOS 4.2.1

Posted November 23, 2010 at 10:17am by
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.


iPhone Dev-Team Releases Jailbreak for iOS 4.2.1
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Comments (7)
Comments are closed for this article.
V.Luz
V.Luz - November 24, 2010 at 3:13am
This is 2 days after iOS 4.2 finally released where the hell is your promise ???
chriskat
chriskat - November 25, 2010 at 8:48am
What promise exactly is it you are refering to?????? You have your jailbreak free of charge..AGAIN...
mark
mark - August 16, 2011 at 1:00pm
hey can you see if you can make one for iphone 2g?
Jeff
Jeff - November 23, 2010 at 10:45am
I'll Wait for the UN-TETHERED Version... Like to Get Folders on my new iPad, But will Wait..
lia
lia - November 23, 2010 at 10:44am
this doesnt work for iPhone 3G with latest version updated?
vdesai
vdesai - November 23, 2010 at 10:30am
but nothing really runs right? cause cydia isn't ready and you have to add your own package manually or something like that
Me
Me - November 23, 2010 at 12:26pm
You should read the article before you post Both Cydia (within redsn0w 0.9.6b4) and MobileSubstrate (install via Cydia) are now 4.2.1 compatible
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