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Try 115200 first (standard for most Amlogic and Rockchip STBs). If that fails, try 9600 or 1500000 (common for high-speed Rockchip configurations). Data bits: 8 Stop bits: 1 Parity: None
In short, Common Causes of the Error
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(Disclaimer: Only attempt this if you are comfortable with micro-soldering and hardware modification, as shorting the wrong pins can permanently kill the device.) Conclusion
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: The system instructs you to inspect the physical serial communication interface. UART relies on dedicated pins on the STB motherboard—specifically Transmit (TX) and Receive (RX).
This guide provides a general approach to troubleshooting boot ROM errors related to UART communication on embedded devices like STBs. Specific steps may vary depending on the device model and its software/firmware. : Try 115200 first (standard for most Amlogic