Tv box mecool km9pro classic does not give signal to tv

I have a device that has an amlogic chip
which seems to turn on and work only that it does not give signal to the tv
at first I thought it was the cable but it is not.
what I have investigated is that it may be a firmware problem
try reinstalling the firmware with the tool
Amlogic + USB + Burning + Tool_v2.1.7.0 … but it throws me an error when I start writing this …
If this same problem happened to someone I would appreciate the help

What is the error you get in USB Burning Tool?

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