|
This confirms the failure is happening at the earliest stage of the boot process. The CPU has executed the code burned into its internal ROM, but that code has encountered a condition where it cannot proceed to load the next stage (usually U-Boot or a similar bootloader). Because this happens before the OS loads, you will not see this on a TV screen; it only appears via a serial debug connection (UART).
The error occurs because the PC misses the 1-second window where the BootROM is listening. To fix this:
Are you using a specific flashing tool like GXDownloader, and do you have the correct .boot file for your specific STB model?
Hold down the (usually hidden inside the AV port or on the bottom of the device) using a toothpick. This confirms the failure is happening at the
Only use firmware designed for your specific TV Box model and revision. Flashing generic firmware can permanently damage the box.
Here is a comprehensive guide to understanding what this error means and how to fix it. What Does This Error Actually Mean?
Plug your USB-to-TTL adapter into the PC and launch your software (e.g., GXDownloader_boot or HiTool). The error occurs because the PC misses the
BootROM waits only after power-on for GET command. If not received, it prints this error and halts.
The Boot ROM (Read-Only Memory) is the very first code executed by the processor when power is applied. If an error happens here, it means the chip cannot load the initial flash tools or the primary bootloader from the storage (eMMC/NAND).
If you see the wait for "GET" error repeatedly, the device is trying to enter BootROM mode, but something is physically blocking the communication. Only use firmware designed for your specific TV
While keeping the pins shorted, plug the USB cable from the PC into the designated OTG port of the STB.
Have you verified that your USB-to-TTL serial drivers are up-to-date in your PC's Device Manager?
: The CH340 or RS232 driver on your PC might be outdated or incorrectly installed.
) does not match the hardware's verification level, the UART handshake will fail. Step-by-Step Troubleshooting Open Flashing Tool : Run your utility (e.g., GXDownloader). Configure Settings , and correct Serial Port Initiate Flashing . The status should change to "Wait for ROM request..." Hardware Reset : Turn on the power switch of the STB. Check Cables
: Most STBs operate on 3.3V TTL levels. Using a 5V adapter can cause communication errors or permanent damage.
© 2010-2022 "Форум Радиосхемы". All Rights Reserved Почта PDA |