My bluray player BDP7500/s2 does not play most original bluray disk since a short time
In display its says dics not regognized.
I have firmware 1.53.
I can not upgrade to 1.63,not via network or usb.
Through USB its says not valid software found

dvd's or mkv's is no problem but only bluray cant play.

Waht can i doe about it or how cani upgrade?