Some BootROM versions expect CTS/RTS lines. Using only TX/RX/GND without disabling hardware flow control in the terminal (e.g., PuTTY, HiTool) leads to the error.
Open your flashing software (like Ali Upgrade Tool or GXDownloader).
The timing of when you flip the power switch on your STB is critical. Keep the STB or unplugged.
: Use computer software compatible with your programmer to manually erase the damaged flash storage blocks, open your raw factory dump firmware ( .bin or .abs ), write the boot code directly to the chip, and resolder the component back onto the mainboard. Bootrom Error Wait For Get Please Check Stb Uart Receive
Plug the adapter into your PC and open a serial terminal tool like PuTTY or Tera Term.
Some STBs require external power to be switched on at a highly specific millisecond during the connection process, while others must be completely unpowered.
Procedure usually is:
If the device still shows the error, examine the boot mode configuration:
If your computer doesn't recognize the adapter, it cannot send the "Get" command the BootROM is waiting for. Open on Windows. Look under Ports (COM & LPT) .
: Double-check your jumper wires. Ensure that the TX (Transmit) pin of your USB-to-TTL adapter connects directly to the RX (Receive) pin of the STB board. Conversely, the RX pin of the adapter must connect to the TX pin of the STB. Ground Reference Matching Some BootROM versions expect CTS/RTS lines
: The device must be manually forced into a serial programming state. Locate the physical recovery button, short the designated BOOT0 / Recovery test points to a high logical voltage state ( 3.3V3.3 cap V
The serial protocol relies on cross-line wiring. The transmit pin (Tx) of the computer must route to the receive pin (Rx) of the STB, and vice versa. Matching Tx-to-Tx and Rx-to-Rx forces both units to speak on the same line, resulting in a dead connection.
: Tools like GXDownloader_boot.exe may be set to the wrong COM port or "Chip Type". The timing of when you flip the power