Dear Martin
Yesterday I have tried it again. When I update the firmware through GUI of the 4308, log-in failed still show on screen.
Today, i have call to Denon, they said there is problem on the firmware update through internet. So it is quite strange to me. Could you please describle what the network setting of the 4308 is? Which brand router you used? I also use the netvigator ISP and I have tried to connect 4308 to the router by wire and wireless also.
Many thanks your advise.
Rollei