St-244f Firmware -
This usually means you are trying to upload a zipped folder. Extract the .bin file from the ZIP first.
Never update firmware during a storm or when the power grid is unstable. A power loss during the writing process can permanently damage the switch. st-244f firmware
Go to the "System" or "Maintenance" tab in the web interface and export your current configuration file. If the update resets the switch, you can restore your settings in seconds. This usually means you are trying to upload a zipped folder