Honeywell International Inc. RTH9580WF01 User Manual

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Software updates
Honeywell periodically issues updates 
to the software for this thermostat. 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.
Updates occur in the early morning. After 
your thermostat receives the software, it 
reboots, briefly displaying the Honeywell 
logo. The screen then shows “Updating 
software…” with a green progress bar. 
When the update is complete, your home 
screen will appear as usual.
Note: 
If you are not connected to Wi-Fi or 
registered at Total Connect Comfort, you 
will not get automatic updates.