Would it be possibe to add an option "-d" to sysupgrade, to just
download and verify the required files? A subsequent call without
"-d" should verify the signatures in the download directory again
I would like to make sure download works at usual business hours,
and to do the "real upgrade" with minimal effort at night time
when nobody gets disturbed by restarting the gateway.
Just a suggestion, of course. Keep on your good work.