diff --git a/make.iso.preseed.sh b/make.iso.preseed.sh
index 4a564a6..6464ff2 100755
--- a/make.iso.preseed.sh
+++ b/make.iso.preseed.sh
@@ -49,8 +49,12 @@ fi
 DEBIAN_VERSION_NAME="stretch"
 
 ## ISO to download and use
-### Can be dvd, net, netinst or mini
-DEBIAN_ISO_TYPE="netinst"
+### Can be :
+### dvd
+### net, netinst
+### non-free, firm, firmware
+### mini
+DEBIAN_ISO_TYPE="firm"
 
 # Define URL according to specified release name {{{
 case "${DEBIAN_VERSION_NAME}" in
@@ -59,11 +63,13 @@ case "${DEBIAN_VERSION_NAME}" in
 
 		DEBIAN_ISO_DVD_URL="https://cdimage.debian.org/debian-cd/current/amd64/iso-dvd/debian-${DEBIAN_VERSION_NB}-amd64-DVD-1.iso"
 		DEBIAN_ISO_NETINST_URL="https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-${DEBIAN_VERSION_NB}-amd64-netinst.iso"
+		DEBIAN_ISO_NONFREE_URL="http://cdimage.debian.org/cdimage/unofficial/non-free/cd-including-firmware/archive/9.7.0+nonfree/amd64/iso-cd/firmware-9.7.0-amd64-netinst.iso"
 		DEBIAN_ISO_MINI_URL="http://ftp.fr.debian.org/debian/dists/${DEBIAN_VERSION_NAME}/main/installer-amd64/current/images/netboot/mini.iso"
 	;;
 	"testing" | "buster" | "unstable" | "sid")
 		DEBIAN_ISO_DVD_URL="https://cdimage.debian.org/cdimage/weekly-builds/amd64/iso-dvd/debian-testing-amd64-DVD-1.iso"
 		DEBIAN_ISO_NETINST_URL="https://cdimage.debian.org/cdimage/daily-builds/daily/current/amd64/iso-cd/debian-testing-amd64-netinst.iso"
+		DEBIAN_ISO_NONFREE_URL="http://cdimage.debian.org/cdimage/unofficial/non-free/cd-including-firmware/weekly-builds/amd64/iso-cd/firmware-testing-amd64-netinst.iso"
 		DEBIAN_ISO_MINI_URL="http://ftp.fr.debian.org/debian/dists/${DEBIAN_VERSION_NAME}/main/installer-amd64/current/images/netboot/mini.iso"
 	;;
 	* )
@@ -82,6 +88,9 @@ case "${DEBIAN_ISO_TYPE}" in
 	net | netinst )
 		USE_DEBIAN_ISO="${DEBIAN_ISO_NETINST_URL}"
 	;;
+	non-free | firm | firmware )
+		USE_DEBIAN_ISO="${DEBIAN_ISO_NONFREE_URL}"
+	;;
 	mini )
 		USE_DEBIAN_ISO="${DEBIAN_ISO_MINI_URL}"
 	;;