Working image backup
dd if=/dev/sdX | gzip -c > armbianopi.img.gz status=progress
Restore
gunzip -c armbianopi.img.gz | dd of=/dev/sdX status=progress
Working image backup
dd if=/dev/sdX | gzip -c > armbianopi.img.gz status=progress
Restore
gunzip -c armbianopi.img.gz | dd of=/dev/sdX status=progress