Happy New Year!

So I did the process as described. Things went much better. Updater gave no errors - said the update was successful. Got to the point at which the green line was showing at the bottom of the screen... but the green line does not complete. It got as far as the letter N in the logo and stops. And that's it. Hangs there.

The device still shows in device manager as 'working properly' - never shows in disk management.

I have not attempted RMPrep because the device does not show in disk management - a requirement for RMPrep to work, yes?