I can enter the CLI for my device (MX200) but when I enter: xCommand SystemUnit ReleaseKey ListI get an error. When I input xcommand SystemUnit ReleaseKey ?, it says the only option is "Add" but won't list. However, on the system info (GUI) page, it ...

Wayne and group, I have an MX200 that is still running 4.2. My security guys are telling me I have to upgrade to 7.3. However, it appears that I need the releasekey to upgrade from 4 to 5, then 5 to 6, then I can go from 6 to 7. When I log into the c...