Thanks for the warning, but unfortunately I discovered it too late.
My hypothesis is that the new firmwares changes some of the internal voltages or signal frequencies of the mother boards, it causes several failures, as we can see here. Seems that thee engineering team didn't perceive this risk or the quality of the componets used by samsung is very poor.
Clearly it's a project failure. As soon as I repair my TV, my intention is to compare the old board with the new one, identifing the problems and share it at youtube as Samsung is not giving any clarification about it.
Let's see if I can help someone.
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