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CUES Inc.
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MPlus+ User Manual | CH905
www.cuesinc.com
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APPENDIX B
MPLUS+ FIELD FIRMWARE UPDATE
6. Activate the firmware update mode:
• Press and hold the MPlus+ power button. The system powers-up initially, as indicated
by the blue LED turning on.
• Continue holding down the MPlus+ power button until the system powers back down,
as indicated by the blue LED turning off. This occurs after anywhere between three
and six seconds.
• Release the MPlus+ power button. The system immediately powers-up, but this time
into the firmware update mode.
7. Wait while the MPlus+ firmware is updated. Onscreen messages indicate the update
progress and will identify if any issues occur during programming.
Please refer to the Troubleshooting section if the system displays an error message.
8. Wait until the MPlus+ system automatically powers-down; this occurs approximately 8 –
10 seconds after the firmware update completes.
9. Remove the USB Flash drive from the circuit board.
10. Move the sliding switch, S1, on the circuit board back to the ‘KB’ position.
11. Set the keyboard panel back in place into the fold-down portion of the MPlus+ Control
Unit, and, using the Phillips screwdriver, reinstall the 14 screws to secure it. Be careful to
not over-tighten the screws.
