How to Check iPhone 3GS New Bootrom / Old Bootrom (iBoot) Version
Step 1: Put your iPhone into DFU Mode (not recovery mode)
Step 2: Right Click on My Computer and click on: Properties Hardware (tab) - Device Manager
Step 3: Select the to open submenus tree items for Universal Serial Bus (USB) Controller*quot;.
Step 4: Now look for Apple Mobile Device USB Driver right click and select Properties.
Step 5: Go to Details and find Device Instance ID
Step 6: Simply scroll through the string and you ll find the bootrom version (iBoot) as shown in the screenshots below:
Step 1: Put your iPhone into DFU Mode (not recovery mode)
- Connect your iPhone to your computer.
- Turn iPhone off.
- Start iTunes.
- Hold Power and Home buttons together for 10 seconds or so.
- Release Power button but keep holding the Home button until your computer recognizes a new USB device.
- iTunes will now recognize your iPhone.
Step 2: Right Click on My Computer and click on: Properties Hardware (tab) - Device Manager
Step 3: Select the to open submenus tree items for Universal Serial Bus (USB) Controller*quot;.
Step 4: Now look for Apple Mobile Device USB Driver right click and select Properties.
Step 5: Go to Details and find Device Instance ID
Step 6: Simply scroll through the string and you ll find the bootrom version (iBoot) as shown in the screenshots below:
iPhone 3GS Old Bootrom 359.3
iPhone 3GS New Bootrom 359.3.2
Step 7: If it 359.3, you have old bootrom. If it 359.3.2 or anything above that, its a new bootrom.
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