Eiki EK-800U Service Manual page 86

Chapter 5 Firmware Upgrade
5.
Then key in the Serial Number, for example
"E58A1005". Then click "RUN" to re-write SN.
Then the "Pass" message will be shown on the
window.
6. Check Serial number.
- press "MENU->OPTION".
- check the serial number.
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EK-800U