Thanks for using Bitnami. We highly recommend you to create a server backup before starting the upgrade process so you can restore it in case something fails
Our stacks don't use the system packages but our own built components. You will need to follow the guide below about upgrading grafana from a tar file.
Please remember to stop all the Bitnami services before starting the upgrade process by running the command below
sudo /opt/bitnami/ctlscript.sh stop
You can also create a backup of your current grafana configuration so you can restore it on the new version by running the next commands
sudo cp -r grafana grafana.bck