How to identify the printer's firmware version.
You can confirm the firmware version by printing the printer information.
To print the printer settings report:
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Make sure that a roll of receipt paper has been loaded and the media roll compartment cover is closed.
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Turn on the printer.
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Press and hold the (Feed) button until "Printing" appears on the LCD. The printer information will
print.
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Check the "PROGRAM VERSION" for the printer's firmware version.