It was a long time ago, so I can't remember precisely.
To be clear, my upgrade was from 1TB (factory installed) to 2TB HDD, not SSD (I'm planning at some point to move from 2TB HDD to 2TB SSD).
I connected both drives to a linux PC, and used dd to copy the existing drive to the new drive, then used parted to expand the data partition to fill the extra 1TB.
At this point, having reinstalled the new drive in the BM5, I seem to recall there was a popup error dialog box from XP during boot - sorry, too long ago to remember exactly what error, but given this was an windows popup, it was obviously quite late in the boot process.
I rebooted the BM5 and selected 'BM5 recovery' from the boot menu and proceeded to reinstall the factory software from there, and after this process was complete the BM5 booted fine, but was obviously on an old version, so next I triggered a software update (from the menu on the BS5).
I didn't use of the B&O service tool at all.
Hope this helps,
Martin.
Location: Exeter, UK