Från Dev-Team’s blog
How to check your iPhone’s bootrom using Windows:
Put your iPhone into DFU mode (how to/tutorial for this step at iClarified).
Then go to Start -> Control Panel -> System -> Hardware -> Device Manager on your Windows machine.
Look for ‘Universal Serial Bus (USB) Controller’, you will find ‘Apple Mobile Device USB Driver’ as a subitem there.
Right Click and choose ‘Properties’, navigate to ‘Details’ tab and select Device Instance Path from the dropdown list box. At the end of this information string you will find the bootrom version, e.g. [iBoot-359.x].
And, for those who don’t know, on a Mac the procedure is:
How to check your iPhone’s bootrom using OSX:
Put your iPhone into DFU mode (how to/tutorial for this step at iClarified).
Open System Profiler and navigate to Hardware -> USB in the left menu.
In the USB Device Tree pane at top right, click on ‘Apple Mobile Device (DFU Mode).’
In the information pane at bottom right, locate the ‘Serial Number’ string. At the end of this information string you will find the bootrom version, e.g. [iBoot-359.x].
