The upgrade method is as follows.

1, prepare a USB flash drive 32G or less
2, the first U disk formatted FAT32
3, the firmware into the U disk
4, find a plug to power up the product, and then plug the U disk into the box USB port upgrade
5, there is a red and green flashing upgrade, do not power off, wait until only the red light is on, and then wait 3 minutes to unplug.

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