Apple released iPhone OS 3.0.1 to fix a serious SMS vulnerability in the iPhone OS where your iPhone can be completely taken over by receiving a maliciously crafted SMS message.

In this tutorial, I will show you how to jailbreak iPhone OS 3.0.1 in the same way you would jailbreak iPhone OS 3.0 with redsn0w.

Please follow these instructions clearly and you’ll be a-o-k. Now, before we begin you may notice that we use the iPhone OS 3.0 IPSW to jailbreak our iPhone OS 3.0.1 device, this is no mistake. When you get asked to select the iPhone firmware you have installed then choose the iPhone OS 3.0 IPSW. Please make sure you have updated your device to 3.0.1 by either updating officially via iTunes or restoring via iTunes. Keep in mind that restoring your iPhone will erase your iPhone’s content. Also, please don’t mind the screenshots saying redsn0w version 0.72 – Use the latest redsn0w version, it’ll be the same as the screenshots below.

Note: We are not responsible if your device blows up in the middle of the jailbreak process (it wont) or if your device doesn’t turn on after using this. Use, strictly, at your own risk!

1. First is first, download redsn0w here (for Windows) or here (for Mac OS X)
2. Second, Download iPhone OS 3.0 or whatever firmware you’ll be using to jailbreak – here

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Today, Apple released a patch to fix the serious SMS security vulnerability that we reported yesterday. iPhone OS 3.0.1, by the looks of it, does not include any new features, but it’s a good idea to update.

Updating to 3.0.1 will make your jailbreak and/or unlock go away so if you don’t want to loose your jailbreak then I suggest you wait a bit while the iPhone Dev Team give the green light to update.

If you want to read the release document from Apple you may do so here