You'll first need to ssh into your Pi or optionally connect it to an external keyboard and monitor and open a command line terminal.
Do not use
If you need
sudoin order to switch branches, you broke something on your OctoPi installation (probably by using
sudoaccidentally earlier) and you need to fix your permissions, not just blindly put
sudoin front of commands until stuff works.
Perform the following steps:
cd ~/OctoPrint source ~/oprint/bin/activate git fetch git checkout <branch> git pull python setup.py clean pip install . sudo service octoprint restart
<branch> above by the branch you want to switch to, e.g.
You'll want to switch the Software Update plugin to "Commit" tracking, otherwise you'll get prompted to reverting to a stable release.