About the 2011 CD/USB receiver firmware updated
Different versions of firmware are used for different model groups. Confirm the model group before proceeding to the download page.
Group A
DPX304
DPX308U
DPX404U
DPX-MP3120
DPX-U5120
DPX-U500
Group B
KDC-348U
KDC-4751SD
KDC-BT31U
KDC-BT41U
KDC-BT648U
KDC-U4549
KDC-U549BT
KDC-U4549SD
KDC-X395
KDC-X695
Group C
KDC-DAB41U
KDC-DAB4551U
KDC-U5049DAB
