/system scheduler
add name=UpgradeFirmware on-event="if ([/system routerboard get current-firmware] !=  [/system routerboard get upgrade-firmware]) do={ :log info message=\"initiate routerboard upgrade\"; /system routerboard upgrade; log info message=\"upgrade routerboard done\"; :delay 10; :log info message=\"initiate reboot after routerboard upgrade\"; /system reboot }" policy=reboot,read,write,policy,test,password,sensitive start-time=startup