Most ZKTeco updates are applied by placing the extracted firmware file (usually ending in .emfw or similar extensions) onto a formatted USB drive. Insert the USB into the K40 Pro.
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Technically, yes, by loading an older .bin file. However, ZKTeco discourages this as database structures change. If you must downgrade, perform a factory reset first. Most ZKTeco updates are applied by placing the
: The primary hub for software, manuals, and system notifications . and system notifications .
