MPROG will not allow me to reprogram the EEPROM in my FT2232C based module to change the VID/PID or reconfigure the module for driver selection or interface type. What am I doing wrong?

More than likely, the VID and/or PID in the EEPROM no longer matches the VID/PID in the driver files. You can confirm this easily enough by downloading and running the USBView Program from the bottom of the page at www.dlpdesign.com. Run the program with the 2232 module connected and see what VID and PID values are being reported.

The two entries look like this: idVendor: 0x0403 (FTDI Ltd.) idProduct: 0x6010 0x6010 is the default value for the FT2232C based modules. Next, look in the . Inf files of the currently loaded driver using Notepad and see if the VID/PID values match.

If not, edit the . Inf files to match both values making sure to change every occurance. Once changed, you must uninstall the currently loaded driver using Add-Remove-Programs in Control Panel and reinstall the modified drivers.

Once the modified drivers are installed and the module shows up correctly in Device Manager, you can once again run MPROG and change the setup of the module. MAke sure you are using the ... more.

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