This is the easiest method and the one recommended by Denon for most users.
If you attempt an update and the receiver goes silent while showing “Update…” for more than 45 minutes, but the display is still lit, . Wait 2 full hours. Some E300 units have very slow write cycles near the end of their flash life. Pulling the plug at minute 46 is a guaranteed brick.
This is the easiest method and the one recommended by Denon for most users.
If you attempt an update and the receiver goes silent while showing “Update…” for more than 45 minutes, but the display is still lit, . Wait 2 full hours. Some E300 units have very slow write cycles near the end of their flash life. Pulling the plug at minute 46 is a guaranteed brick. Denon Avr E300 Firmware Update
