You can try the following steps to repair:
1. First, when the console is turned off, use a hexagonal screwdriver to open the back shell, remove and reinsert the battery port, then turn it on.
2. Second, if it still does not work after the first step, you can try to flash the firmware according to the following links.
RG35XX H:
https://we.tl/t-EAzPl2JFOl
RG35XX Plus:
https://we.tl/t-4LBD1WE8Td
After updating the firmware, please press the reset button.
If you still can't fix it through the above steps, please contact customer service for help, thank you.
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