Sometimes the TV expects a different name, like allupgrade_ms638_8G.bin . Check the documentation provided with your specific link. Conclusion
If done correctly, the TV's indicator light will start blinking rapidly, or a "Software Upgrading" progress bar will appear. mstarupgradebin link
Even if the board matches, if the firmware link is for a 4K screen and you have a 1080p screen, the TV won't display an image. Always verify the resolution. Sometimes the TV expects a different name, like
While holding the button, plug the TV back into the power outlet. Even if the board matches, if the firmware
Do not turn off the power until the TV reboots itself. Common Risks and Tips
Once you have secured a valid download link and have the file, follow these steps to upgrade your TV:
Because firmware is highly specific, using the wrong link can permanently damage your TV's display (causing "mirror images" or distorted colors). Here is how to search effectively: