Famed iPhone hacker George Hotz is at it again, and this time he’s making it (black)ra1n! Following on his “purplera1n” iPhone jailbreak utility, Geohot has released his “blackra1n” to jailbreak Apple’s latest iPhone OS 3.1.2 for iPhones everywhere. The utility is fairly self-explanatory (it takes just 30 seconds to use), but we’d still recommend you know what you’re doing before diving in.
Also, we should not that the iPhone Dev Team advises against using blackra1n for now. Especially if you want to preserve your iPhone 3G and iPhone 3GS carrier unlock. Even if you don’t need to keep your iPhone unlocked for any GSM network, Geohot’s blackra1n utility might make future PwnageTool jailbreaks more difficult.
Find blackra1n here. You can just ignore Geohot’s not-so-subtle blackra1n banner.