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The USB driver for the 9500 should not have changed. Should be same across all firmware revisions.
I would suggest connecting USB cable directly to remote (don't go through docking station) and powering the remote up while connected to computer with firmware update program running and waiting to detect the remove. Hopefully, firmware process will detect the unit.
You also did not mention if you've upgraded PC's recently such as moving from a 32 bit to a 64 bit OS. What OS are you using as well?
