Firmware Updates / Software Downloads


Model name OPC-478UC
Download Type USB Driver
Version Ver. 1.4
Update 2013/02/22

Major improvements:

  • Usability with Microsoft® Windows® 8 is added. (32 and 64 bit, but not the "RT" version)
  • Usability with Microsoft® Windows® 98SE, Me, 2000, are removed.
  • There are two different OPC-478UCs:
    One has no marks on the label of the OPC-478UC. (previous)
    One has a "B" marked on the label. (See the illustration below.)

The previous OPC-478UC does not have any marks printed.

  • The previous (unmarked) OPC-478UC is usable with:
    Microsoft® Windows® 7 (32 and 64 bit)
    Microsoft® Windows Vista®
    Microsoft® Windows® XP.

    The previous (unmarked) OPC-478UC is NOT usable with:
    Microsoft® Windows® 8 (32 and64 bit, including the "RT" version)
    Microsoft® Windows® 95, 98, 98SE, Me, 2000, and NT.
    Neither cable is usable with Microsoft® Windows® 95, 98, 98Se, Me, 2000, nor NT.
  • Use the marked ("B") OPC-478UC when you are using Microsoft® Windows® 8 (32 and 64 bit, but not the "RT" version.)
  • Neither cable is usable with Windows® 8.1(32, 64 nor "RT" version.)

Installing the 1.4 version USB driver

  • Download the driver, extract the ZIP file, and then double click on the folder icon with your OS name displayed.
  • Read the installation guide in the folder for details, and for what is required by your system environment.


  • Use the 1.3 version USB driver with unmarked cables. The unmarked cable will not work correctly with 1.4 version USB driver for Microsoft® Windows® 8 (32 and 64 bit, but not the "RT" version).
  • Use the 1.4 version USB driver with a marked cable for Microsoft® Windows® 8 (32 and 64 bit, but not the "RT" version).
  • If you use the marked cable and the unmarked cable on the same PC, you must use the 1.3 version USB driver. Used together, those cables will not work correctly with the 1.4 version USB driver.

Usability table of the cables and the USB drivers

CableUSB driverUsability
Unmarked cables (No "B")1.4 version driverNot usable
1.3 version driverUsable
Marked cable ("B")1.4 version driverUsable
1.3 version driverUsable
When marked cables
and unmarked cables
are both used on your PC.
1.4 version driverNot usable
(Unmarked cable is not usable)
1.3 version driverUsable
File Type ZIP
File Size 14.1MB

Regarding this Download Service.

When using this download service, the implementation, use and/or results of use are the sole responsibility of the person making the download.

Firmware is important data for the basic system control of your equipment. An interruption during downloading or a malfunction may cause a failure in the data re-writing, and your equipment may stop functioning normally. If such a failure of the firmware re-writing results in your equipment not functioning normally, Icom Inc. expressly denies and is free from any and all responsibility arising from the result of damage from such an event.

I fully understand the above, and agree not to hold Icom Inc. responsible for any damage to my equipment operation or loss of data as a result of this download.