I have 40PFL9715/02 TV with 9.22 firmware.
THere are problems when trying to search for new DVB-T channels. There is no such option as update digital channels list. So I can go and do a complete rescan (analog + digital) but this deletes my current list with names etc.

There is also the option in Configuration to Test signal: Digital. There I can put custom frequency to search for channels. I haven't been able to find so antything yet. But after each search I loose access to previously viewable channels with an error message "no channels avaiable". I have to shut down the TV and start it up again. Then the previously found channels are avialable again.

BTW. It would be great to have an option like with analog channels to update digital channels

PS. I'm translating the options name s from Polish so sorry if there are some mistakes.