diff --git a/config/heads/boards/librem13v4/librem13v4.config b/config/heads/boards/librem13v4/librem13v4.config
new file mode 100644
index 0000000..2d28efc
--- /dev/null
+++ b/config/heads/boards/librem13v4/librem13v4.config
@@ -0,0 +1,39 @@
+# Configuration for a librem13v4
+CONFIG_LINUX_CONFIG=config/linux-librem13v2.config
+CONFIG_COREBOOT_CONFIG=config/coreboot-librem13v4.config
+
+export CONFIG_COREBOOT=y
+CONFIG_CRYPTSETUP=y
+CONFIG_FLASHROM=y
+CONFIG_FLASHTOOLS=y
+CONFIG_GPG2=y
+CONFIG_KEXEC=y
+CONFIG_UTIL_LINUX=y
+CONFIG_LVM2=y
+CONFIG_MBEDTLS=y
+CONFIG_PCIUTILS=y
+CONFIG_POPT=y
+CONFIG_QRENCODE=y
+CONFIG_TPMTOTP=y
+
+#CONFIG_SLANG=y
+#CONFIG_NEWT=y
+CONFIG_CAIRO=y
+CONFIG_FBWHIPTAIL=y
+CONFIG_LIBREMKEY=y
+
+CONFIG_LINUX_USB=y
+
+export CONFIG_TPM=y
+export CONFIG_BOOTSCRIPT=/bin/gui-init
+export CONFIG_BOOT_REQ_HASH=n
+export CONFIG_BOOT_REQ_ROLLBACK=n
+export CONFIG_BOOT_KERNEL_ADD="intel_iommu=on"
+export CONFIG_BOOT_KERNEL_REMOVE=""
+export CONFIG_BOOT_USB=y
+export CONFIG_BOOT_DEV="/dev/sda1"
+export CONFIG_BOOT_GUI_MENU_NAME="Librem 13 v4 | AirgapOS Firmware Menu"
+export CONFIG_WARNING_BG_COLOR="--background-gradient 0 0 0 150 125 0"
+export CONFIG_ERROR_BG_COLOR="--background-gradient 0 0 0 150 0 0"
+export CONFIG_FLASHROM_OPTIONS="-p internal"
+export CONFIG_AUTO_BOOT_TIMEOUT=5
diff --git a/config/heads/boards/librem15v4/librem15v4.config b/config/heads/boards/librem15v4/librem15v4.config
new file mode 100644
index 0000000..c57dd7d
--- /dev/null
+++ b/config/heads/boards/librem15v4/librem15v4.config
@@ -0,0 +1,40 @@
+# Configuration for a librem15v4
+
+# The L15v4 Linux config is the same as the L13v2 linux config
+CONFIG_LINUX_CONFIG=config/linux-librem13v2.config
+CONFIG_COREBOOT_CONFIG=config/coreboot-librem15v4.config
+
+export CONFIG_COREBOOT=y
+CONFIG_CRYPTSETUP=y
+CONFIG_FLASHROM=y
+CONFIG_FLASHTOOLS=y
+CONFIG_GPG2=y
+CONFIG_KEXEC=y
+CONFIG_UTIL_LINUX=y
+CONFIG_LVM2=y
+CONFIG_MBEDTLS=y
+CONFIG_PCIUTILS=y
+CONFIG_POPT=y
+CONFIG_QRENCODE=y
+CONFIG_TPMTOTP=y
+
+#CONFIG_SLANG=y
+#CONFIG_NEWT=y
+CONFIG_CAIRO=y
+CONFIG_FBWHIPTAIL=y
+CONFIG_LIBREMKEY=y
+
+CONFIG_LINUX_USB=y
+
+export CONFIG_TPM=y
+export CONFIG_BOOTSCRIPT=/bin/gui-init
+export CONFIG_BOOT_REQ_HASH=n
+export CONFIG_BOOT_REQ_ROLLBACK=n
+export CONFIG_BOOT_KERNEL_ADD="intel_iommu=on"
+export CONFIG_BOOT_KERNEL_REMOVE=""
+export CONFIG_BOOT_DEV="/dev/sda1"
+export CONFIG_BOOT_GUI_MENU_NAME="Librem 15 v4 | AirgapOS Firmware Menu"
+export CONFIG_WARNING_BG_COLOR="--background-gradient 0 0 0 150 125 0"
+export CONFIG_ERROR_BG_COLOR="--background-gradient 0 0 0 150 0 0"
+export CONFIG_FLASHROM_OPTIONS="-p internal"
+export CONFIG_AUTO_BOOT_TIMEOUT=5
diff --git a/config/heads/patches/usb-boot.patch b/config/heads/patches/usb-boot.patch
new file mode 100644
index 0000000..f93a294
--- /dev/null
+++ b/config/heads/patches/usb-boot.patch
@@ -0,0 +1,17 @@
+diff --git a/initrd/init b/initrd/init
+index bb39dec..975d041 100755
+--- a/initrd/init
++++ b/initrd/init
+@@ -48,6 +48,11 @@ if [ ! -e /dev/tpm0 ]; then
+   export CONFIG_TPM='n'
+ fi
+ 
++if [ "$CONFIG_BOOT_USB" = "y" ]; then
++    insmod /lib/modules/usb-storage.ko >/dev/null 2>&1 \
++    || echo "usb_storage: module load failed"
++fi
++
+ if [ "$CONFIG_COREBOOT" = "y" ]; then
+        /bin/cbfs-init
+ fi
+
diff --git a/scripts/environment b/scripts/environment
index 8fb54ef..f3c41a6 100755
--- a/scripts/environment
+++ b/scripts/environment
@@ -7,6 +7,7 @@ env_file=${HOME}/config/config.env
 
 export BUILD_DIR="${HOME}/build"
 export BR2_EXTERNAL="${HOME}/config/buildroot"
+export HEADS_EXTERNAL="${HOME}/config/heads"
 export RELEASE_DIR="${HOME}/release"
 export BUILDROOT_REPO=git://git.busybox.net/buildroot
 export HEADS_REPO=https://source.puri.sm/coreboot/purism-heads.git
diff --git a/scripts/fetch b/scripts/fetch
index fe237fd..98850b0 100755
--- a/scripts/fetch
+++ b/scripts/fetch
@@ -6,9 +6,13 @@ build_dir="${BUILD_DIR?}"
 buildroot_dir="${build_dir}/buildroot"
 buildroot_repo="${BUILDROOT_REPO?}"
 buildroot_ref=${BUILDROOT_REF?}
+buildroot_external=${BR2_EXTERNAL?}
 heads_dir="${build_dir}/heads"
 heads_repo="${HEADS_REPO?}"
 heads_ref=${HEADS_REF?}
+heads_external=${HEADS_EXTERNAL?}
+devices=${DEVICES?}
+target=${TARGET?}
 
 [[ -f ~/.gitconfig ]] || \
 	printf "[color]\nui=auto\n[user]\nemail=build@local\nname=Build User" \
@@ -18,18 +22,29 @@ mkdir -p "$build_dir"
 
 [ "$(ls -A "${buildroot_dir}")" ] \
 	|| git clone "$buildroot_repo" "$buildroot_dir"
+git -C "$buildroot_dir" reset --hard
 git -C "$buildroot_dir" checkout "$buildroot_ref"
-cd "$buildroot_dir"
-git reset --hard
-for patch in ${BR2_EXTERNAL}/patches/*; do
-	echo "Applying patch: ${patch}"
-	patch -p1 --no-backup-if-mismatch < "${patch}"
-done
-make "airgap_${TARGET}_defconfig"
-make source
+(
+	cd $buildroot_dir;
+	for patch in "${buildroot_external}"/patches/*; do
+		echo "Applying patch: ${patch}";
+		patch -p1 --no-backup-if-mismatch < "${patch}";
+	done;
+	make "airgap_${target}_defconfig";
+	make source;
+)
 
 [ "$(ls -A "${heads_dir}")" ] \
 	|| git clone "$heads_repo" "$heads_dir"
+git -C "$buildroot_dir" reset --hard
 git -C "$heads_dir" checkout "$heads_ref"
-[[ "$DEVICES" =~ "librem" ]] \
-	&& (cd "$heads_dir/blobs/librem_kbl" && ./get_blobs.sh)
+(
+	cd "$heads_dir";
+	for patch in "${heads_external}"/patches/*; do
+		echo "Applying patch: ${patch}"
+		patch -p1 --no-backup-if-mismatch < "${patch}"
+	done
+	rsync -Pav "${heads_external}/boards/" "${heads_dir}/boards/"
+	[[ "$devices" =~ "librem" ]] \
+		&& (cd "$heads_dir/blobs/librem_kbl" && ./get_blobs.sh)
+)