How to find out the bootrom version of your iPhone [VIDEO]

Since the jailbreak for iOS 5 is still tethered, I wanted to find out if my iPhone 3GS had the old bootrom version or the new one. The old version will allow you to have an untethered jailbreak, which means you will NOT have to hook up your iPhone to your computer to keep the jailbreak every time you restart your iPhone, you turn it off, or it dies.

Watch the video below to see how to do it. And for those of you who would like the written instructions, I put them below the video.

Enjoy!

Instructions

1. Connect your iPhone to your computer
2. Turn iPhone off
3. Start iTunes
4. Hold Power and Home buttons together for 10 seconds or so
5. Release Power button but keep holding the Home button until your computer recognizes a new USB device
6. iTunes will now recognize your iPhone

Note: Your iPhone screen at this time should be black (black in color), if not, then you are most likely in Recovery Mode, not DFU mode.

Here’s a visual for you that shows the difference between “Recovery Mode” and “DFU Mode”:



7. Click on the background image of your desktop (not an icon) OR click on “Finder” at the bottom of your screen in the dock, all the way to the left
8. Click on “Go” at the top of your screen in the menu bar and select “Utilities”
9. Double-click on “System Profiler”
10. Click on USB on the left
11. On the right, you should see “Apple Mobile Device (DFU Mode).” Click on it.
12. After you click on it, a new section should appear below it.
13. You should see “Serial Number.” Right below the serial number, you should see [iBoot-359.3] or [iBoot-359.32]. The second one is the new bootrom. The first one is the old one.



14. Done!

If you have the old bootrom, count yourself LUCKY! You can go and jailbreak/unlock your iPhone and it will be an untethered jailbreak, which means once you jailbreak it, it’s jailbroken. You will NOT need to hook up your iPhone to your computer every time your iPhone restarts or dies, which is what everyone else has to do as of now, until the iPhone Dev Team produces an untethered jailbreak for iOS 5.

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