I got the upgrade last night about 4am after I turned off my blower to take a bathroom break.......screen began flashing indicating an upgrade in progress do not remove power...........only lasted a couple minutes and then back to the home screen after the upgrade.
I went into the My Options....About section to check the software version numbers.......the device software stayed the same (SX567-0205) but I noticed that the Humidifier software version had changed from SX556-0202 to SX556-0204
I do not know what the upgrade entailed, but I do know several people have complained about the connection to the heated hose drops out sometimes..........it's possible it might be related to this problem, but I have no definitive information on what the upgrade entailed.