: Press and hold the Pause (||) button on the unit.
Download the firmware file from the Official Yamaha Support Page . Yamaha Cd S303 Firmware Update
Wait for the player to read the drive. The display will recognize the update file and prompt you with an update notification (e.g., UPDATING or F/W UPDATE ). : Press and hold the Pause (||) button on the unit
: Must support "USB mass storage class" and have no encryption applied Yamaha Corporation Verification Yamaha Cd S303 Firmware Update