If your computer enters sleep mode, the firmware update may not be performed properly.ĭo not turn off the device power, or disconnect any USB or LAN cables while the firmware update is in progress. To prevent problems resulting from operations performed on other computers during the firmware update, performing the update using a USB connection is recommended. How to upgrade mac operating system 10.8 to 10.12 update# If using the fax functions, disconnect the telephone line from the main unit. Configure your computer settings so that it will not enter sleep mode before performing the firmware update. If the device is connected via USB cable, disconnect the LAN cable. If using a USB connection, do not connect the device through a USB hub as doing so may result in connection errors. If the device is connected via LAN cable, disconnect the USB cable. If a critical error occurs (the device will not start after turning on the power, etc.), repairs will be required. How to upgrade mac operating system 10.8 to 10.12 update#.
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