Just because it’s legal to do so doesn’t mean that you necessarily want to do it. Even so, the newest jailbreak for the iPhone is out in the world for those of you who are interested.
Not surprisingly, we’re once again turning our attention over to the Chronic Dev Team to find the newest version of Greenpois0n for your jailbreaking pleasure. The good news is that this is an untethered solution, meaning that you can reboot your iDevice without having to plug it into a computer.
For now, the Greenpois0n jailbreak for iOS 4.2.1 is only for Macs, but we’re fully expecting the Windows and Linux equivalents to be pushed out soon enough. You might not even want to jailbreak anymore, though, since the Verizon iPhone already allows for hotspot sharing (and presumably the GSM version will follow… we hope). These jailbreaks can sometimes have odd effects on those with carrier unlocked iPhones too.
So, as is the case with all these jailbreaks, proceed at your own risk, caution, and discretion. It is called pois0n for a reason.