How do I uninstall LMS using the command line?

Hi,

I am about to migrate from one NAS where my LMS is installed, to another.

They have different architectures. The old one is Intel x86, the newer one is ARM.

I have posted about this migration in the ReadyNAS support forums and have been advised to uninstall the apps first.

I can't do this in the GUI since, with the more recent versions of LMS, they have been installed using the CLI.
The version of LMS currently installed is 8.1.1

One thing I absolutely do not want to lose, is all the track ratings with the TrackStat plugin.

So my question is, I guess I have to uninstall LMS on the old NAS, how do I go about doing that in the CLI?
If any further information is needed in order to be able to help, please let me know.

Thanks in advance.

p.s. once I complete the migration, can I verify that the version I will need to install on the ARM-based NAS is:
Logitech Media Server: Debian Installer Package (ARM) / logitechmediaserver_8.1.2~1618550311_arm.deb from here? Thanks.