: Keep the button pressed firmly for 10 full seconds to completely drain any residual power from the internal capacitors.
U-Boot 2023.01 (Jan 10 2024 - 10:00:00 +0000) br23uboot100
If you are using a third-party controller like a GameSir G7, the BR23UBOOT1.00 error indicates that the controller's customizable operating layout has broken down. : Keep the button pressed firmly for 10
kagaimiq/jl-uboot-tool: JieLi SoC/MCU flasher & dumper (sorta) br23uboot100
Breaking down the keyword br23uboot100 reveals its exact function: