MagicMirror/Upgrading
From r00tedvw.com wiki
Core
Upgrading the core software is easy.
https://docs.magicmirror.builders/getting-started/upgrade-guide.html
Navigate to the folder you cloned the core project to.
ie.
~$ /opt/MagicMirror
reset any changes you've made to the core project
~$ git reset --hard
perform a git pull and install
~$ git pull && npm run install-mm