Our boy George Hotz has done it again. He released a jailbreak for iPhone OS 3.1.2 today, which stuck to his previous nomenclature, this time called “blackra1n.” As the man known as Geohot says, “blackra1n is a 30 second ALL device 3.1.2 jailbreak.” That’s right – 3G, 3GS, whatever you’ve got it works.

There is one warning, which comes from blog used to tease the jailbreak. You should not upgrade to 3.1.2 via iTunes if you have an unlocked phone. It will “fix” the unlock and you’ll be SOL. You can use PwnageTool to get up to 3.1 safely. If you’ve already lost your unlock, blackra1n can get back your jailbreak.

As with previous geohot unlocks, the download is PC only, so get with your Windows friends if you want this to work.

Dev Team has found a way to jailbreak the newest version of the iPhone OS, OS 3.1. The hack requires that you’ve jailbroken the phone for either 3.0 or 3.0.1. The jailbreak was previously unavailable for the newest iPhone model. If you purchased a new phone that comes with 3.1 pre-installed, you’re out of luck. There is no method for jailbreaking the device from that state at this time. You know someone will find it within the next few months, though. It only takes so long.

Alright, so the headline is a little bit misleading, but in a sense it’s true. The Dev-Team has had an exploit for the iPhone 3GS set and ready to go, but they want to wait until 3.1 so that Apple doesn’t immediately patch their hole. George Hotz got tired of waiting, so he’s releasing the jailbreak himself.

As of yet there aren’t many details, and not many folks have tested it, but those who have are reporting a successful unlock. GeoHot, or George Hotz, has the necessary file listed on purplera1n.com. After the jailbreak, you should be able to use ultrasn0w for the unlock.

I think the best part of this whole saga is Hotz’s comments regarding the Dev-Team decision to hold of on release. I’ll send you off to backup, jailbreak, and unlock with his words:

Normally I don’t make tools for the general public, and rather wait for the dev team to do it. But guys, whats up with waiting until 3.1? That isn’t how the game is played. We release, Apple fixes, we find new holes. It isn’t worth waiting because you might have the “last” hole in the iPhone. What last hole…this isn’t golf. I’ll find a new one next week.

Well said, George. Good luck jailbreaking – enjoy your holiday.