You need to have version 9.0 running already. Then it is just a matter of
- BACKUP shows and personalities
- download the updater file
- save to USB thumbdrive
- connect USB drive to console
- on the console, run the installer (from Tools...)
- restart
- done
Be aware that Autosaves from your older version will not load into a newer version - do a proper full save if you want to re-use your shows.
However, if you are on an older version, then you need to install version 9.0 using a recovery stick.
Everything is describe in the release notes:
http://www.avolites.com/Portals/0/Downl ... esV9.1.pdfHave fun, Sebastian