Denon AVR-X3300W Service Manual page 159

2. Updating via USB
The latest firmware can be downloaded to a USB memory for updates.
2.1. Connecting to the USB Memory
(1) Preparation
• Use a memory that supports USB2.0.
• USB format : Prepare a USB memory formatted in FAT16 or FAT32.
• Do not run the USB memory through a hub.
• Do not connect a computer to the USB port of this unit using a USB cable.
• Do not use an extension cable when connecting the USB unit.
• If a USB memory device cannot be updated, replace it with a different USB memory device and per-
form the update again.
2.2. Unzipping the Downloaded File
Unzip the downloaded file on your computer.
AVR-XXXXXXX USB_AVR-XXXXXXX_XXXXXXXXXXXX-XXXX.zip
copy to USB flash drive
The "firmwares" folder is created upon unzipping the file.
Copy that folder to USB flash drive.
The "firmwares" folder must be in the root directly of the USB flash drive (memory).
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