I couldn't find a copy of v21, so I used v24 to downgrade, then v31 to upgrade it. Took me all day but finally it accepted the disc. However, it is still showing as 4-1/40 even though the upgrade said it was now version 10.00.

So I'm back to square one.

I don't understand how it can say it's one version but then state an older version on the settings menu.

Any advise on what to do next?

Thanks