Less than a week ago, my 55NANO906NA updated to 04.40.19. Since then, when changing channels, I get some channels with no sound, channels with sound and a black screen, and sometimes just a black screen with no sound. Some channels do show up after +5 seconds. Channels which are not being displayed, do show up after turning off and back on the TV.
None of the mentioned issues were present until the latest firmware version which I mentioned.
I tried to reinstall the update using a USB drive but this only works for updating, not reinstalling the same version.
I rad an article about how to register to the development program to be able to downgrade the firmware and if these issues persist in the following days I will give it try.
I really don't understand how this can be possible. Is there any channel to report these issues and get them officially fixed?
It's really sad to get all these problems , just after the support period ended. Is it really a coincidence or just a lost of interest towards the older already sold products?