Our Business WiFi solution is state based and to ensure your Business WiFi Access Point is connecting to the closest controller, please only include a "customer-config" for your geographic state. The folder "Inbuilt Wi-Fi" is to reset the inbuilt Wi-Fi which is accessible on http://10.10.10.2 by default. If you want to reset the entire unit, please include both files * customer-config * ap860vae-customer-config Please ensure the USB drive you are using is actually 'readable' by the router, best option is connect the USB stick and run a "dir usbflash0:" if the contents of the drive list, you can use that drive. If not try another drive or reformat.