Esto corresponde a otra marca pero vale para todas, estaba buscando información sobre que cambios ha hecho Denon en su ultima actualización de firmware y lo primero que dice:

...you can download the software free of charge and update your product at your own risk and responsibility. Please bear in mind that a failed software update might result in a partialy or completely malfunction of your unit. In such case a repair could be comprehensive and quite expensive. DENON assumes no responsibility...

DENON recommends you to update your unit only in case where some problem has been encountered

Yes, I have read the text above and understood that the software update, I would do by myself, will be on my own risk.