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Common bootloader baud rates: 115200 , 57600 , 38400 , 19200 , 9600
The most common culprit is an incorrect baud rate, which causes the computer to flood the STB with unreadable data gibberish.
: Double-check that you have selected the correct COM port in Device Manager. What and terminal software are you currently using
Cheap or incompatible converters, such as PL2303, can drop packets or provide inconsistent voltages.
Lack of a common ground connection or using low-quality, unshielded jumper wires.
If you have completed this entire matrix and the "UART receive full" error still blocks your progress, the flash memory chip (EMMC or SPI NAND) on the STB may have a hardware short. If this is the case, manually shorting the data pins (CLK to GND) on the flash memory during bootup is sometimes required to force the BootROM back into a clean, empty state ready for programming. Cheap or incompatible converters, such as PL2303, can
The system is waiting for a command or firmware package ("get" command) from the UART interface.
Outdated or unstable Prolific, FTDI, or CH340 drivers on Windows.
The and chip type selection you are using. If this is the case, manually shorting the
: You throw the bottle into the sea. Your computer screen says, "Wait for get"
Without the correct key, the bootloader proceeds to normal boot and ignores UART commands, causing the "wait for get" timeout.