The upgrade is automatic, so there should be no additional steps besides installing the new version. The first run will update databases and leave a copy with a timestamp in case you need to downgrade.
However, the new version changes quite a few things that may impact you:
- No
mono
required
You can delete themono
packages after installing 2.1.0.4 - Mandatory API password
You need to set a password. - New authentication
Theduplicati-client
tool no longer works, but you can use ServerUtil for some of the tasks. - Websockets
You may need to change proxy configuration if you are using this