Firmware Update using a Web Browser
Here's some interesting behavior of the AVS7701. If you use a web browser to go to the IP address of the AVS7701, you can configure the device and save and restore settings. If you start a firmware upgrade the box tries to connect to the Marantz firmware server and, if successful, does the upgrade. If not successful, the AVS7701 reboots several times and tries several more times to do the upgrade, then stops trying after 10 to 15 minutes of attempts. At that point you can use your web browser to connect to the AVS7701 and instead of getting a screen to do configuration settings, you get a screen that allows you to upload new firmware from a file, if you have the firmware file.
I so wish Marantz would make the firmware file available for download so that we could update our AVS7701's using a web browser as an alternative to online updating or using USB devices.
Master Reset versus Microprocessor Reset
After an attempt to update firmware fails, powering down, then pushing in movie/music while powering up does a master reset of the AVS7701 for both network settings and the microprocessor. Powering up while pushing in Game/A-DSX only resets the microprocessor and preserves the network settings.