Posted by vpkirk on Mar 01, 2016; 10:41am
URL: https://itus.accessinnov.com/Update-script-fw-upgrade-tp43p227.html

So if I understand correctly, going from:
26 03 * * * sh /sbin/fw_upgrade

to

26 03 /7 * * sh /sbin/fw_upgrade

will change me from an every day update, to a once a week update.

Thanks!