Update #2 10/19/2010 – Greenpois0n now supports iPod Touch 2G, both MC and MB models!

Update 10/12/2010 – Greenpois0n is out. It works on same iDevices as Limera1n, but there is also a Mac version! There is a good guide here.

So yesterday Geohot released Limera1n. This will jailbreak iPhone 3GS, iPod Touch 3G, iPhone 4 and iPod Touch 4G on any firmware 4.0 or higher. It will also jailbreak your iPad on 3.2.2. It currently only works on Windows but a Mac version should be coming very soon. I was going to do a video, but I’m busy and had to use my work PC (I only have Macs at home). Thus, I’ll refer you to a better guide and video than I would have done anyway so keep reading. I did learn one big thing that should help you. Be sure your PC has iTunes 10 or higher and you have it running in the background (just minimize it). If you don’t Limera1n will tell you it worked, but you won’t get the icon and therefore can’t install Cydia. Greenpois0n will not be coming out now. I won’t go into here, but ask in Forum if you are interested. There has been a lot of drama in the jailbreak community. So the best step by step guide is here. This worked for me once I ran iTunes in background. There are tons on videos showing this jailbreak on YouTube now so just search for limera1n and pick one that is only 1 day old with the most views.