Denon AVR-4520CI Service Manual

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3.2. UnzipDownloadFile
Pleases unzip the downloaded le on PC.
copy to USB flash drive
You can find "firmwares" folder aer unzipped. Please copy
that folder to USB flash drive. You have to put "firmwares"
folder on root directly on USB flash drive(memory).
AVR4520 E3 USB_AVR-4520E3_000100620100-0001.zip
000100620100
3.3. CopyforUSBashdrive

Denon AVR-4520CI Specifications

General

Brand	Denon
Model	AVR-4520CI
Category	Receiver
Language	English