If an error occurs during firmware update, troubleshoot as follows:
Turn the printer off and on.
Perform the update again using the correct firmware file.
Firmware update fails because the device is in use.
Perform the update again when the device is not in use.
The firmware file is not appropriate.
Perform the update again using the correct firmware file.
The update is aborted during downloading of the firmware file onto the device.
Perform the update again by using the firmware file you used for the previous update.
If you are using a DNS server, the machine's IP address might have changed.
Check the IP address, and then perform the update again.
The firmware file is not appropriate.
Perform the update again using the correct firmware file.