Sorry, but the process fails in between step 3 and 4.
I updated to fw 5.00 using the webupdater.
I downloaded the updater and it found the device using the 5 second trick on the battery icon, although no new hardware is found.

Any idea?

Edit:

I solved. It's just that the updater doesn't accept a directory with a long name or with a space in the directory name.
Please update the description including this advice.