SATO WS408DT Technical Manual page 94

5 Update Firmware
6. In the Open dialog box, browse to the folder that contains the firmware files.
Select all of them and click Open.
7. If you want to update specific files, select the check boxes of those files; if you
want to update all of the firmware files, right-click in the blank area in the list,
and click Select All.
Update Firmware in SATO WS4 Printer Utility
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