* Disconnect GPIB and USB cables from Prologix GPIB-USB Controller
* Connect Prologix GPIB-USB Controller to Microsoft Windows PC using an USB cable
* Open a command prompt
* Change to the folder where you unzipped the upgrade package
* Type updater.exe
* Wait until the upgrade finishes, which should take less than 15 seconds, then recycle power by disconnecting and reconnecting the USB cable.