+ -d <delay> add a delay before rebooting
+ -f <config> restore configuration from .tar.gz (file or url)
+ -i interactive mode
+ -c attempt to preserve all changed files in /etc/
+ -b / --create-backup <file>
+ create .tar.gz of files specified in sysupgrade.conf
+ then exit. Does not flash an image. If file is '-',
+ i.e. stdout, verbosity is set to 0 (i.e. quiet).
+ -n do not save configuration over reflash
+ -F / --force
+ Flash image even if image checks fail, this is dangerous!
+ -q less verbose
+ -v more verbose
+ -h / --help display this help