Earlier today, Apple released iOS 4.2, or more precisely 4.2.1. Every time we have a new software update, the questions come back. When can we get a jailbreak? For what models? Tethered? Untethered? Can I unlock? You know the drill.

The Dev Team wrote a blog post a few minutes ago updating us about the status of the jailbreak and unlock for iOS 4.2.1. Here are the most important points:

  • If you care about your unlock, you should not update to 4.2.1, no matter what (wait for PwnageTool to be updated)
  • iPhone 3G, older iPhone 3GS, and non-MC iPod touch 2G will soon be able to be jailbroken. Thanks to a combination of pwnage2 exploit, the arm7_go exploit, 24kpwn, and LimeRa1n, you will get an untethered jailbreak.
  • For users of newer devices (ie. iPhone 4), there is a way to jailbreak but it is a tethered jailbreak (which means you have to plug your iPhone in your computer to kick start if every time you reboot it).
  • Comex is working on method that would untether the iOS 4.2.1 jailbreak but you will need to have your SHSH blobs on file to use it.
  • There is no ETA for an official 4.2.1 jailbreak to be released.
  • An unlock for the iPhone 3G and 3GS will probably be available this week be available this weekend, once RedSn0w and Cydia have been updated and released.
  • There is no sign of an iPhone 4 unlock for iOS 4.2.1 at this time, which is why you should not update to 4.2.1 without using PwnageTool to preserve your baseband.

UPDATE: RedSn0w for iOS 4.2.1 has been released. Here is the tutorial.

Anything else, feel free to ask in the comments.