System Backup and Restore from USB Commands

 
USB restoration disables Zero Touch Provisioning (ZTP).
The target board should be in a fresh or clean state before restoration. Ensure that the configuration directory (/usr/local/etc) is empty. When restoring on the same board, clear this directory prior to performing the restore.
If a USB drive containing an ONIE installer is attached to the board, executing sys-update install command may use the installer from the USB. Ensure that the USB is removed or the USB backup feature is disabled before running sys-update.
The running installer should present in the /installers directory. If it is not available, use the sys-update get command to download the installer.