The way to get a Rockchip player into upgrade mode without the menu is to turn the switch off and hold a button down while plugging it into the computer. It's usually the play button, but a bad firmware can change that so it could be any button, just continue to hold it while you plug it into the computer, if it's not recognized then try a different button, then when it's recognized you can let go of the button and see if the upgrade software recognizes it. If it doesn't, you may have to load the right drivers for that upgrade software. The right drivers should be in the upgrade programs folder. The way to upgrade the driver is to go into Device Manager and delete the driver that's being used, then windows will detect it and ask to find a driver, point it to the one in the upgrade programs folder and it should then be able to upgrade.
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