No, I haven’t changed anything in the .inf file.
In step 5.
After you installed the “eHome Infrared Receiver” did device manager detect an “unknown device”?
The driver for the “unknown device” is in the rar-file. You have to manually select “I choose a driver location” and point to the extracted folder HIDCLASSCIRCLASSIRDEVICE. A list should appear with the manufacturers and you select “Microsoft” in the left window pane. Then in the right pane you select “eHome Infrared Transceiver”.
Hope it helps. Please write back with response.