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8.2 Update Firmware Via USB Port
1. Select USB port and click “Get USB” button.
2. Select “USB Printing Support” in USB Device option
3. Click “Send File” button to select firmware file and send selected firmware through
USB interface to update printer firmware.
4. M23 will show the following message on LCD when firmware update.
5. Printer will reset automatically once firmware upgrade is completed.
Main Update BIOS
Receive Data …
Main Update BIOS
Write Flash …