The CLI tool has a built in upgrade function and will notify you if new version is available.
you can check the version at any time
$ border0 version check You are up to date! You're running version v1.0-273-g31b6797-dirty
CLI version check
$ border0 version check You're running version v1.0-256-g08c9822-dirty There is a newer version available (v1.0-273-g31b6797-dirty)! Please upgrade: border0 version upgrade
Manual upgrade with CLI
$ sudo border0 version upgrade Upgrading /usr/local/bin/border0 to version v1.0-273-g31b6797-dirty Upgrade completed
Updated about 2 months ago