From MOD Wiki
Local DeployPlugins are stored in
/root/.lv2/. Typically, directories end up here through the UI installation system, which downloads the bundle from a URL. It is also possible to build a plugin locally and manually copy the archive to this directory. The following process works as of firmware 1.5. The root password is "mod".
Install new plugin
scp -r myplugin.lv2 firstname.lastname@example.org:~/.lv2/
scp -r myplugin.lv2 email@example.com:~/ ssh firstname.lastname@example.org # enter password cd .lv2/ mv myplugin.lv2 ../myplugin.lv2.bak mv ../myplugin.lv2 .
Each option must be followed by a hard power off.
To enable the Mod hosted unstable plugin repository, go to the URL with the mod attached via USB
Click the Advanced tab. Check the box to enable unstable plugins.