Add .ucode driver in Debian installer

When I install Debian, installer request network connection. But Debian can't found my Ethernet card (Intel(R) Dual Band Wireless-AC 8260). I use non-free installer and try put .ucode file in /firmware/ folder on USB (from here ), but it not work! I also try renamed iwlwifi-8000 in iwlwifi-8260, but it also not work. Big thanks for your response!