FWIW its possible to create a bootable USB using the magician software in despite it not being able to see the SSD. The MBP booted from the USB image but then FreeDOS produced an error code.
In short the only way I was able to update the firmware was via a bootable DVD.
I have the Samsung 840 and ran into the same problem as others in creating the DVD for my MB Pro 2010.
What worked for me was to download and burn the Mac ISO on a Windows 7 laptop. It might also have helped that I also used a different brand of DVD. Hope this helps for others having the problem.