If you are doing this update, also try using Windows XP or Windows 7 32 bit. If you are using Windows 10, there may be issue.

Also, try removing any Logitech wireless mice/keyboards from your PC.

I've never seen a case where you can do everything on the remote except for updating firmware. Note that you don't have to do a full firmware update, just update without replacing the configuration then download your own which you seemed to indicate you could do.

Contact user GoPronto from this site. Maybe he has spare TSU9300's. As you cannot move past step b, i'm thinking there may be issues with your remote.

[Link: remotecentral.com]

Lyndel