Electronic chart system
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Appendix 4:
The operation of HM-5817 upgrade
1.Unscrew two screws on the USB cover in the
2 .Open the USB cover.
side / front of the whole machine by counterclockwise.
3. Insert the U disk to upgrade operation in the USB upgrade mouth
4. Boot.
,
the automatically upgrade operating will be displayed on the screen
.
5.
The upgrade is complete, shut down..Remove the upgrade tool.