Yamaha RX V3900 - AV Network Receiver Firmware Update page 4

Step5 Rotate the PROGRAM selector counterclockwise to select "FIRM UPDATE
USB".
Step6 To start the firmware update, press the MENU button.
(Allow about 10 minutes for the update)
Caution! Do not interrupt power or remove the USB thumb drive during the update.
In case the power is accidentally cut off, refer to troubleshooting
procedures on page 6 to recover.
Step7 When "UPDATE OK" appers on the display, firmware update is completed.
The receiver automatically powers off and on again in normal operation
mode.
Step8 Power OFF the unit by pressing MASTER ON/OFF button on the front panel.
Remove the USB thumb drive.
STEP6
Step9 Check the updated firmware version.
Firmware Update Procedure for RX-V3900
Firmware reprogramming in progress
STEP5
STEP8
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