I use a very old version of nodered (v0.20.07). I have many tabs and nodes for my smart home and everything works fine.
Now I would like to update to the newest version. How can I do this without to loose all my nodes, settings and so on?
I found that I need only to type " sudo npm install -g --unsafe-perm node-red": will this work? Will the new Node.js version be installed too?