I've seen quite a bit of discussion regarding the new limera1n release, which works on the iPhone 4 if you have 4.1 installed, and have a question. I've never jailbroken an iPhone before. Some of the blog posts I've read talk about the newest hack being a "hardware" modification or a change to the "boot rom". I have no idea what this means, but it seemed to suggest that the latest jailbreak method will now be immune to future OS updates from Apple. Can anyone clarify for me whether or not this is true? I regularly grab OS updates and don't want to do the jailbreak if Apple's pending 4.2 update will simply "un-jailbreak" my device. Thanks guys.