When I had my 1693S, I used C0deKing’s quality-patched KC4B firmware - however, being modded firmware it will void any warranty on the drive.
Can’t provide a link currently, as rpc1.org appears to be down.
I found it worked excellently, though, and gave the drive a new lease of life.
But aside from that, the firmware you downloaded is fine. Run the .exe and go.
Generally, to reduce the amount of stuff running in the background, I tend to do all my flashing in Safe Mode. And make sure there’s no disc in the drive at the time, hehe