The error message indicates a critical handshake failure between a Set-Top Box (STB) and flashing software via a serial (UART) interface. This hard-coded error commonly triggers during low-level firmware recovery, unbricking procedures, or custom ROM flashing on media players using chipsets like NationalChip (GX), Amlogic, or Rockchip. What Does the Error Mean?
To resolve the issue, it helps to break down exactly what each part of the error message means:
This indicates that the device enforces strict hardware-backed security. The bootloader is locked, cryptographic signatures are actively checked, and the device requires formal authentication before it will accept low-level serial commands or custom firmware images. Root Causes of the Error
: Change this to 115200 (standard for most STBs) or drop it down to 9600 for debugging noisy lines. Data Bits : 8 Parity : None Stop Bits : 1 Flow Control : None Direct Feature Comparison: Flashing Scenarios The error message indicates a critical handshake failure
With the device powered off, use a pair of metal tweezers or a precision screwdriver to gently short-circuit (bridge) these two pins together.
: This part of the message points towards Google's Verified Boot mechanism. Verified Boot is a mechanism that helps ensure that a device boots up with a known good state, preventing malware from altering the boot process.
Last updated: October 2025 – Verified against Amlogic S905X3 and Broadcom BCM7252 platforms. To resolve the issue, it helps to break
Because the BootROM is waiting for an external command ("wait for get"), you can intercept it using the official manufacturer flashing utilities. For Amlogic-based boxes (the most common culprits for this error), use the .
If you need to replace your hardware for this repair, common tools include: USB to TTL Adapters : Look for modules based on the which often have a 3.3V/5V toggle switch. Jumper Wires
: The device may need to be manually put into a specific boot mode (e.g., pulling a BOOT0 pin high or holding a physical reset button during power-on) to accept the "Google Verified" handshake. Data Bits : 8 Parity : None Stop
Before altering any firmware configurations, check the physical serial connection rules using resources like the STMicroelectronics Community Guides:
The SoC is telling you that its UART hardware interface (the serial communication pins on the board) is not successfully receiving data. It is broadcasting a signal but getting no response, or the incoming data is corrupted.
In this article, we will dissect every component of this error, explain why “Google verified” appears in the context of boot security, and provide a step-by-step guide to diagnosing and fixing the issue using UART debugging.