Honeywell Home Smart RTH6580WF1008 User Manual page 29

Software updates
The software for this thermostat is periodically updated.
The updates occur automatically through your Wi-Fi
connection. All your settings are saved, so you will not
need to make any changes after the update occurs.
While the update is taking place, your thermostat
screen flashes Updating and shows the percentage of the
M34001
update that has occurred. When the update is complete,
your home screen will appear as usual.
Note: If you are not connected to Wi-Fi, you will not get
Percentage of
automatic updates.
update complete
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