Downgrading to a previous version

Follow these steps to roll back to a previous version of Switch:

Export all existing flows to a safe place as a backup; see Importing and exporting flows.
Delete all existing flows in Switch (not the backup!); see Adding and removing flows.
Uninstall the newer version of Switch.
Install the previous version of Switch.
Launch Switch.
Import the flows from the backup made (when you first launched it); see backup location above.