Thursday, June 24, 2010

How to Check iPhone 3GS Bootrom Version !!

Do you like this story?

Last year Apple updated iBoot of iPhone after 4 months of it’s release, so there are two types of iPhone 3GS available in the wild, first are with old iBoot version 359.3 and others are new iBoot version iBoot: 359.3.2 The bootrom is a snippet of code that runs at startup time, and checks on the status of the boot image. It’s generally used to verify that the image has not been corrupted, but can also be used to check for unauthorized firmware.
Older bootrom are exploitable with 24kpwn vulnerability, so we can jailbreak them with pwnagetool up to iOS 4, on the other hand newer bootrom are waiting for a new exploit / vulnerability. Following are the instructions to check your bootrom version.

to check iPhone 3GS bootrom version on Mac OS :

Put your iPhone in DFU mode.

(Connect your iPhone to iTunes, turn off, click power+home button for 10 seconds, leave POWER button after 10 seconds, holding HOME button) If the Restore Logo is present on the screen, you are in Recovery Mode, not DFU.

iTunes will detect your iPhone in recovery mode, ignore the iTunes message.
check in System Profiler for the iBoot version.
In that information, you will find [iBoot-359.x] at the end.

To check iPhone 3GS bootrom version on Windows :

Put your iPhone in DFU mode.

(Connect your iPhone to iTunes, turn off, click power+home button for 10 seconds, leave POWER button after 10 seconds, holding HOME button) If the Restore Logo is present on the screen, you are in Recovery Mode, not DFU.

iTunes will detect your iPhone in recovery mode, ignore the iTunes message.
Now go to Start->Control Panel->Device Manager, in Universal Serial BUS Controller, you will find Apple Mobile Device USB Driver.
Right Click and go to Properties, go to Details tab and select “Device Instance Path” from the drop down list box.
In that information, you will find [iBoot-359.x] at the end.

Thanks iHackentosh

You may also like :