FT_PROG cannot find my FT4222H IC when using UMFT4222PROG-IC. What can I do?

FT_Prog sends a Vendor Command over the USB to turn on the programming voltage. This will happen when you click on scan for devices. Now the programming voltage is on, when scan for devices is clicked, the FT4222H IC will be found. Also, SW1 can be used to switch from one IC to another.