Insert the USB into your computer. Right-click the drive > Format > File System: . Leave Allocation unit size as default. Click Start.
: Decompress the downloaded file and save the firmware data file directly to the root folder (the highest level) of your USB drive. change the file name. Enter USB Mode : On the player, press to switch to Connect and Start Yamaha Cd S303 Firmware Update
Use a USB flash drive formatted to that is empty and unencrypted. Insert the USB into your computer
: The USB flash drive should be empty and formatted to FAT16 or FAT32 . Yamaha Cd S303 Firmware Update