SATO WS408TT Technical Manual page 102

5 Update Firmware
10. Printer will restart automatically after the message "Firmware Update,
Succeed" appears.
11. When the update is complete, the message "Firmware Update Complete"
appears. At the same time, your printer restarts itself. Click Close to close the
dialog box or click Save Log to save the firmware update log.
Update Firmware in SATO WS4 Printer Utility
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