On this show John WD9BCH shows us how to backup a image from a allstar node or hotspot with a utility on a Mac.
You can find the utility below.
https://www.balena.io/etcher/
For a transcription click the dropbox link below.
https://www.dropbox.com/s/lb6qc0aj31dxqzp/Backup%20Utility%20Micro%20SD%20card%20Mac.txt?dl=0
Don't forget to visit www.blindhams.com
