Symptom : 'Failed to connect to update server'' error message occurs during internet update.
Please follow the two steps as the below.
1) Try Server reset
Path : Configuration > Server > Reset > Save
2) Force Stop GDS Smart or KDS 2.0
Path : Settings > Apps > GDS Smart or KDS 2.0 > Force stop
After that, start GDS Smrat or KDS 2.0 to perform the internet update.
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