upgrade(1), -- no action
noUpgrade(2) -- initiate an upgrade
Setting this object to noUpgrade(2) results in no action.
When set to upgrade(1), FastHub will attempt to download a
firmware file whose name is given by
mrUpgradeTFTPLoadFilename, from the server whose address
is given by mrUpgradeTFTPServerAddress. Both
mrUpgradeTFTPServerAddress and mrUpgradeTFTPLoadFilename
must be non-empty for the upgrade to proceed. The object
always returns noUpgrade(2) when read.
Default value: noUpgrade(2).