Bootrom Error Wait For Get Please Check Stb Uart Receive Google Verified May 2026

Title: Troubleshooting "BootROM Error: Wait for GET" – UART Communication Failure

Prerequisites

• A Windows PC (Windows 10 or 11 recommended)
• USB_Burning_Tool (Version 2.2.0 or higher for Google Verified devices)
• The correct firmware image (.img file) for your specific box model.
• A male-to-male USB cable (USB 2.0 high-speed).
• A pin or paperclip to press the reset button.

Method 1: Uploading Bootloader via UART (Manual Recovery)

Many SoCs have a built-in BootROM download mode:

1. Hold a specific key (e.g., reset button) or short a test point during power-on.
2. The message wait for get changes to wait for bootloader or remote boot ready.
3. Use a vendor tool like Amlogic Burn Card Maker, Rockchip Android Tool, or Broadcom UART download utility to send u-boot.bin.

For Amlogic STBs:

./update bulkcmd “saveenv”
./update flash bootloader u-boot.bin

Solutions

1. Reflash the Bootloader/Boot ROM: If the bootloader or boot ROM is corrupted, reflashing it might resolve the issue. This usually requires specific tools and knowledge about the device.
2. Check UART Connection: Ensure the UART connections are secure and not loose. Also, verify that the baud rate and other settings are correct if you're trying to communicate through UART for debugging.
3. Resolve Google Verification: Ensure that the device's software is properly configured to meet Google's verification requirements. This might involve re-flashing the OS or ensuring that all Google required apps and services are properly installed and configured.

B. Hardware Faults

If the configuration is perfect but the error persists, the physical device may be damaged. Title: Troubleshooting "BootROM Error: Wait for GET" –

1. Short Circuits: If the UART pins on the PCB are shorted to ground (common if solder splashes bridge connections), the RX pin might be held low. The CPU sees this as a continuous stream of invalid data or noise.
2. Flash Memory Failure: If the NAND Flash or eMMC storage is corrupted or physically dead, the BootROM might try to enter "Recovery Mode" (downloading a new image via UART) automatically. If it fails to enter this mode correctly due to memory controller issues, it halts.
3. Power Supply Instability: If the voltage drops during the high-current spike of booting, the CPU may reset or behave erratically during the UART handshake.

3.3 Correct Baud Rate

| SoC Family | BootROM UART Baud Rate | |------------|------------------------| | Amlogic S905X/Y series | 115200 | | Amlogic S905X4, S912 | 921600 | | Rockchip RK3328/RK3368 | 1500000 | A Windows PC (Windows 10 or 11 recommended)

Google reference: Chromecast with Google TV (S905Y4) uses 921600. Method 1: Uploading Bootloader via UART (Manual Recovery)

What "get" means here

In many vendor BootROM implementations, "get" refers to a low-level command/state in a proprietary protocol where the host requests data from the device or initiates a data transfer to restore firmware. The BootROM prints "wait for get" to indicate it's ready to receive that host-initiated transfer.