Open your flashing software, load your binary firmware file, and select your COM port.

The STB might require 3.3V TTL levels, but the adapter is providing 5V, or vice versa, causing communication noise.

The error essentially indicates that the device's BootROM is waiting for a specific "GET" command, but that command is not arriving correctly. The solution requires a systematic approach to check your UART connection and identify whether the problem is software-related (wrong settings or files) or a hardware failure.

If you are trying to revive a dead set-top box (STB) like the or an STM32-based device, encountering the "Bootrom Error: Wait For Get" typically means your computer's upgrade tool is sending a request, but the device isn't acknowledging it through the serial connection.

If you have tried all the above and the error persists, the STB hardware itself may be the issue. A blown capacitor in the power supply or a damaged flash memory chip can prevent the bootrom from responding. Try using a different PC or a different USB-to-RS232 adapter to rule out computer-side hardware failure.

Click the , Start , or Upgrade button inside the software first . The utility will enter a pending state and begin broadcasting its handshake token. Immediately plug in or switch on the STB's power supply.

If you are attempting to flash firmware on an Android TV box, Amlogic device, or generic IPTV set-top box and encounter the error message:

Keep the set-top box turned completely off via its physical toggle switch or power cord.

When a Set-Top Box displays this UART error, the issue usually stems from one of four primary scenarios:

[Host PC Tool] [STB BootROM] │ │ │ ─── Send 0x7F Sync / Boot Escape Sequence ────► │ [Awaiting Signal] │ │ │ ◄── ACK (0x79) / Handshake Signal ───────────── │ [Establishes Baud] │ │ │ ─── Stream First Payload Block (SPL/Preloader) ──► │ X │ [STALLS HERE] [TIMEOUT LOOP] "Check STB UART Receive" ◄─────────────────────────── "Wait For Get..."