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In the event of a power failure during a firmware update, the device may fail to “reboot” because of
corrupted firmware. Using the CN Update procedure described below, this function is used to
update/recover the firmware by transferring data to the MFP PWB, SCU PWB, PCU PWB, FAX PWB, and
various options by means of a USB memory.
MENU KEY REFERENCE:
The following five key areas are used for operations during CN update mode:-
CN UPDATE - Firmware Recovery Procedure:-
1. Power off the MFP, remove the Rear Cabinet and MFP PWB cover:-
2. Set the MFP PWB UPDATE DIP-SW to ON:-
3. Install the USB Memory containing the MX-M266/316N firmware into the USB slot:-
4. Power ON the MFP device - the boot menu should appear after approx 10 seconds, followed by
Version Check information:-.
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