D premier firmware upgrade. HELP!

[gianventu]

Ok, then it could be an issue with the sd card. Have you tried to format and copy thebfiles again ?
You can also try a different card.

Already done with a new one. Even if I take out the one inside my old d premier and insert in the new one,  I keep receiving the same message.
If I take out the "dp_cfg.txt" file, I receive the message "no configuration file": that means the sd cards are red properly' I guess.