I tried to upgrade the machine with USB media. But the message "Saving the upgrade file. Do not turn main power to OFF." appeared for more than 5 minutes and I still can't upgrade it.
Depending on the machine, you can't use your USB media for upgrade.
You can use your USB media for other usage.
If the message "Saving the upgrade file. Do not turn main power to OFF." appears for more than 5 minutes,
Please use USB cable for upgrade.
For more details, please click "Downloads" and refer to "the Instruction PDF" in "How to Download and Install".
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