diff --git a/README-CN.md b/README-CN.md
index 2c9f0d6..7a5f0de 100644
--- a/README-CN.md
+++ b/README-CN.md
@@ -1,5 +1,5 @@
 ## 介绍
-`rpi23-gen-image.sh` 是一个自动生成树莓派2/3系统镜像的脚本工具, 当前支持自动生成32位 armhf 架构的Debian, 发行版本`jessie`, `stretch` 和 `buster`. 树莓派3 64位镜像需要使用特定的配置参数 (```templates/rpi3-stretch-arm64-4.11.y```). 
+`rpi23-gen-image.sh` 是一个自动生成树莓派2/3系统镜像的脚本工具, 当前支持自动生成32位 armhf 架构的Debian, 发行版本`jessie`, `stretch` 和 `buster`. 树莓派3 64位镜像需要使用特定的配置参数 (```templates/rpi3-stretch-arm64-4.14.y```). 
 
 ## 构建环境所依赖的包
 一定要安装好下列deb包, 他们是构建过程需要的核心包. 脚本会自动检查, 如果缺少,经用户确认后会自动安装. 
diff --git a/README.md b/README.md
index 01021c5..5120a4f 100644
--- a/README.md
+++ b/README.md
@@ -96,6 +96,9 @@ Set default system timezone. All available timezones can be found in the `/usr/s
 ##### `EXPANDROOT`=true
 Expand the root partition and filesystem automatically on first boot.
 
+##### `ENABLE_DPHYSSWAP`=true
+Enable swap. The size of the swapfile is chosen relative to the size of the root partition. It'll use the `dphys-swapfile` package for that.
+
 ##### `ENABLE_QEMU`=false
 Generate kernel (`vexpress_defconfig`), file system image (`qcow2`) and DTB files that can be used for QEMU full system emulation (`vexpress-A15`). The output files are stored in the `$(pwd)/images/qemu` directory. You can find more information about running the generated image in the QEMU section of this readme file.
 
@@ -382,7 +385,8 @@ Enable Kernel Zswap support. Best use on high RAM load and mediocre CPU load use
 Allow attaching eBPF programs to a cgroup using the bpf syscall (CONFIG_BPF_SYSCALL CONFIG_CGROUP_BPF) [systemd compilations about it - File /lib/systemd/system/systemd-journald.server:36 configures an IP firewall (IPAddressDeny=all), but the local system does not support BPF/cgroup based firewalls]
 
 ##### `KERNEL_SECURITY`=false
-Enables Apparmor, integrity subsystem, auditing 
+Enables Apparmor, integrity subsystem, auditing.
+
 ---
 
 #### Reduce disk usage:
@@ -540,5 +544,5 @@ qemu-system-arm -m 2048M -M vexpress-a15 -cpu cortex-a15 -kernel kernel7.img -no
 * [Official Raspberry Pi Kernel on github](https://github.com/raspberrypi/linux)
 * [U-BOOT git repository](https://git.denx.de/?p=u-boot.git;a=summary)
 * [Xorg DDX driver fbturbo](https://github.com/ssvb/xf86-video-fbturbo)
-* [RPi3 Wireless interface firmware](https://github.com/RPi-Distro/firmware-nonfree/tree/master/brcm80211/brcm)
+* [RPi3 Wireless interface firmware](https://github.com/RPi-Distro/firmware-nonfree/tree/master/brcm)
 * [Collabora RPi2 Kernel precompiled](https://repositories.collabora.co.uk/debian/)
diff --git a/bootstrap.d/12-locale.sh b/bootstrap.d/12-locale.sh
index 79496f5..c086ee2 100644
--- a/bootstrap.d/12-locale.sh
+++ b/bootstrap.d/12-locale.sh
@@ -23,15 +23,15 @@ if [ "$(echo "$APT_INCLUDES" | grep ",locales")" ] ; then
   # https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=684134 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=685957
   # ... so we have to set locales manually
   if [ "$DEFLOCAL" = "en_US.UTF-8" ] ; then
-    chroot_exec echo "locales locales/locales_to_be_generated multiselect ${DEFLOCAL} UTF-8" | debconf-set-selections
+    chroot_exec echo "locales locales/locales_to_be_generated multiselect ${DEFLOCAL} UTF-8 | debconf-set-selections"
   else
     # en_US.UTF-8 should be available anyway : https://www.debian.org/doc/manuals/debian-reference/ch08.en.html#_the_reconfiguration_of_the_locale
-    chroot_exec echo "locales locales/locales_to_be_generated multiselect en_US.UTF-8 UTF-8, ${DEFLOCAL} UTF-8" | debconf-set-selections
+    chroot_exec echo "locales locales/locales_to_be_generated multiselect en_US.UTF-8 UTF-8, ${DEFLOCAL} UTF-8 | debconf-set-selections"
     sed -i "/en_US.UTF-8/s/^#//" "${ETC_DIR}/locale.gen"
   fi
 
   sed -i "/${DEFLOCAL}/s/^#//" "${ETC_DIR}/locale.gen"
-  chroot_exec echo "locales locales/default_environment_locale select ${DEFLOCAL}" | debconf-set-selections
+  chroot_exec echo "locales locales/default_environment_locale select ${DEFLOCAL} | debconf-set-selections"
   chroot_exec locale-gen
   chroot_exec update-locale LANG="${DEFLOCAL}"
 
diff --git a/bootstrap.d/13-kernel.sh b/bootstrap.d/13-kernel.sh
index 607ec1d..557071b 100644
--- a/bootstrap.d/13-kernel.sh
+++ b/bootstrap.d/13-kernel.sh
@@ -564,20 +564,28 @@ if [ "$BUILD_KERNEL" = true ] ; then
   fi
 
 else # BUILD_KERNEL=false
-  if [ "$SET_ARCH" = 64 ] && { [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; } ; then
+  if [ "$SET_ARCH" = 64 ] 
+    if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; then
+	  # Use Sakakis modified kernel if ZSWAP is active
+      if [ "$KERNEL_ZSWAP" = true ] || [ "$KERNEL_VIRT" = true ] || [ "$KERNEL_NF" = true ] || [ "$KERNEL_BPF" = true ] ; then
+	    RPI3_64_KERNEL_URL="${RPI3_64_BIS_KERNEL_URL}"
+	  fi
 
-	# Use Sakakis modified kernel if ZSWAP is active
-    if [ "$KERNEL_ZSWAP" = true ] || [ "$KERNEL_VIRT" = true ] || [ "$KERNEL_NF" = true ] || [ "$KERNEL_BPF" = true ] ; then
-	  RPI3_64_KERNEL_URL="${RPI3_64_BIS_KERNEL_URL}"
-	fi
+      # Create temporary directory for dl
+      temp_dir=$(as_nobody mktemp -d)
 
-    # Create temporary directory for dl
-    temp_dir=$(as_nobody mktemp -d)
-
-    # Fetch kernel dl
-    as_nobody wget -O "${temp_dir}"/kernel.tar.xz -c "$RPI3_64_KERNEL_URL" 
+      # Fetch kernel dl
+      as_nobody wget -O "${temp_dir}"/kernel.tar.xz -c "$RPI3_64_KERNEL_URL" 
+    fi
+    if [ "$SET_ARCH" = 64 ] && [ "$RPI_MODEL" = 4 ] ; then
+      # Create temporary directory for dl
+      temp_dir=$(as_nobody mktemp -d)
 
-    #extract download
+      # Fetch kernel dl
+      as_nobody wget -O "${temp_dir}"/kernel.tar.xz -c "$RPI4_64_KERNEL_URL" 
+    fi
+	
+	#extract download
     tar -xJf "${temp_dir}"/kernel.tar.xz -C "${temp_dir}"
 
     #move extracted kernel to /boot/firmware
@@ -593,15 +601,15 @@ else # BUILD_KERNEL=false
     chown -R root:root "${R}/lib/modules"
   fi
 
-  # Install Kernel from hypriot comptabile with all Raspberry PI
-  if [ "$SET_ARCH" = 32 ] ; then
+  # Install Kernel from hypriot comptabile with all Raspberry PI (dunno if its compatible with RPI4 - better compile your own kernel)
+  if [ "$SET_ARCH" = 32 ] && [ "$RPI_MODEL" != 4 ] ; then
     # Create temporary directory for dl
     temp_dir=$(as_nobody mktemp -d)
 
     # Fetch kernel
     as_nobody wget -O "${temp_dir}"/kernel.deb -c "$RPI_32_KERNEL_URL"
 
-    # Copy downloaded U-Boot sources
+    # Copy downloaded kernel package
     mv "${temp_dir}"/kernel.deb "${R}"/tmp/kernel.deb
 
     # Set permissions
diff --git a/bootstrap.d/15-rpi-config.sh b/bootstrap.d/15-rpi-config.sh
index 382c6c9..9c763e9 100644
--- a/bootstrap.d/15-rpi-config.sh
+++ b/bootstrap.d/15-rpi-config.sh
@@ -127,7 +127,7 @@ if [ "$ENABLE_TURBO" = true ] ; then
   echo "boot_delay=1" >> "${BOOT_DIR}/config.txt"
 fi
 
-if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; then
+if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ]; then
 
   # Bluetooth enabled
   if [ "$ENABLE_BLUETOOTH" = true ] ; then
@@ -208,6 +208,11 @@ else
   echo "enable_uart=0"  >> "${BOOT_DIR}/config.txt"
 fi
 
+# Disable dphys-swapfile service. Will get enabled on first boot
+if [ "$ENABLE_DPHYSSWAP" = true ] ; then
+  chroot_exec systemctl disable dphys-swapfile
+fi
+
 if [ "$ENABLE_SYSTEMDSWAP" = true ] ; then
   # Create temporary directory for systemd-swap sources
   temp_dir=$(as_nobody mktemp -d)
diff --git a/bootstrap.d/20-networking.sh b/bootstrap.d/20-networking.sh
index f80f006..a1213db 100644
--- a/bootstrap.d/20-networking.sh
+++ b/bootstrap.d/20-networking.sh
@@ -106,7 +106,7 @@ if [ "$ENABLE_WIRELESS" = true ] ; then
   temp_dir=$(as_nobody mktemp -d)
 
   # Fetch firmware binary blob for RPI3B+
-  if [ "$RPI_MODEL" = 3P ] ; then
+  if [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
     # Fetch firmware binary blob for RPi3P
     as_nobody wget -q -O "${temp_dir}/brcmfmac43455-sdio.bin" "${WLAN_FIRMWARE_URL}/brcmfmac43455-sdio.bin"
     as_nobody wget -q -O "${temp_dir}/brcmfmac43455-sdio.txt" "${WLAN_FIRMWARE_URL}/brcmfmac43455-sdio.txt"
diff --git a/bootstrap.d/44-nexmon_monitor_patch.sh b/bootstrap.d/44-nexmon_monitor_patch.sh
index 5a260a2..1dc17b1 100644
--- a/bootstrap.d/44-nexmon_monitor_patch.sh
+++ b/bootstrap.d/44-nexmon_monitor_patch.sh
@@ -74,7 +74,7 @@ if [ "$ENABLE_NEXMON" = true ] && [ "$ENABLE_WIRELESS" = true ]; then
     cp -f "${NEXMON_ROOT}"/patches/bcm43430a1/7_45_41_46/nexmon/brcmfmac43430-sdio.bin "${WLAN_FIRMWARE_DIR}"/brcmfmac43430-sdio.bin
   fi
   
-  if [ "$RPI_MODEL" = 3P ] ; then
+  if [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
     cd "${NEXMON_ROOT}"/patches/bcm43455c0/7_45_154/nexmon || exit
 	sed -i -e 's/all:.*/all: $(RAM_FILE)/g' ${NEXMON_ROOT}/patches/bcm43455c0/7_45_154/nexmon/Makefile
     make clean
diff --git a/bootstrap.d/50-firstboot.sh b/bootstrap.d/50-firstboot.sh
index cc76f34..1b17876 100644
--- a/bootstrap.d/50-firstboot.sh
+++ b/bootstrap.d/50-firstboot.sh
@@ -8,30 +8,35 @@
 # Prepare rc.firstboot script
 cat files/firstboot/10-begin.sh > "${ETC_DIR}/rc.firstboot"
 
-# Ensure openssh server host keys are regenerated on first boot
-if [ "$ENABLE_SSHD" = true ] ; then
-  cat files/firstboot/21-generate-ssh-keys.sh >> "${ETC_DIR}/rc.firstboot"
-fi
-
 # Prepare filesystem auto expand
 if [ "$EXPANDROOT" = true ] ; then
   if [ "$ENABLE_CRYPTFS" = false ] ; then
-    cat files/firstboot/22-expandroot.sh >> "${ETC_DIR}/rc.firstboot"
+    cat files/firstboot/20-expandroot.sh >> "${ETC_DIR}/rc.firstboot"
   else
     # Regenerate initramfs to remove encrypted root partition auto expand
-    cat files/firstboot/23-regenerate-initramfs.sh >> "${ETC_DIR}/rc.firstboot"
+    cat files/firstboot/21-regenerate-initramfs.sh >> "${ETC_DIR}/rc.firstboot"
+  fi
+
+  # Restart dphys-swapfile so the size of the swap file is relative to the resized root partition
+  if [ "$ENABLE_DPHYSSWAP" = true ] ; then
+    cat files/firstboot/23-restart-dphys-swapfile.sh >> "${ETC_DIR}/rc.firstboot"
   fi
 fi
 
+# Ensure openssh server host keys are regenerated on first boot
+if [ "$ENABLE_SSHD" = true ] ; then
+  cat files/firstboot/30-generate-ssh-keys.sh >> "${ETC_DIR}/rc.firstboot"
+fi
+
 # Ensure that dbus machine-id exists
-cat files/firstboot/24-generate-machineid.sh >> "${ETC_DIR}/rc.firstboot"
+cat files/firstboot/40-generate-machineid.sh >> "${ETC_DIR}/rc.firstboot"
 
 # Create /etc/resolv.conf symlink
-cat files/firstboot/25-create-resolv-symlink.sh >> "${ETC_DIR}/rc.firstboot"
+cat files/firstboot/41-create-resolv-symlink.sh >> "${ETC_DIR}/rc.firstboot"
 
 # Configure automatic network interface names
 if [ "$ENABLE_IFNAMES" = true ] ; then
-  cat files/firstboot/26-config-ifnames.sh >> "${ETC_DIR}/rc.firstboot"
+  cat files/firstboot/42-config-ifnames.sh >> "${ETC_DIR}/rc.firstboot"
 fi
 
 # Finalize rc.firstboot script
diff --git a/files/apt/flash-kernel b/files/apt/flash-kernel
deleted file mode 100644
index 579e562..0000000
--- a/files/apt/flash-kernel
+++ /dev/null
@@ -1,3 +0,0 @@
-Package: flash-kernel
-Pin: origin repositories.collabora.co.uk
-Pin-Priority: 1000
diff --git a/files/firstboot/22-expandroot.sh b/files/firstboot/20-expandroot.sh
similarity index 100%
rename from files/firstboot/22-expandroot.sh
rename to files/firstboot/20-expandroot.sh
diff --git a/files/firstboot/23-regenerate-initramfs.sh b/files/firstboot/21-regenerate-initramfs.sh
similarity index 100%
rename from files/firstboot/23-regenerate-initramfs.sh
rename to files/firstboot/21-regenerate-initramfs.sh
diff --git a/files/firstboot/23-restart-dphys-swapfile.sh b/files/firstboot/23-restart-dphys-swapfile.sh
new file mode 100644
index 0000000..32c8638
--- /dev/null
+++ b/files/firstboot/23-restart-dphys-swapfile.sh
@@ -0,0 +1,5 @@
+# Restart dphys-swapfile service if it exists
+logger -t "rc.firstboot" "Restarting dphys-swapfile"
+
+systemctl enable dphys-swapfile
+systemctl restart dphys-swapfile
diff --git a/files/firstboot/21-generate-ssh-keys.sh b/files/firstboot/30-generate-ssh-keys.sh
similarity index 100%
rename from files/firstboot/21-generate-ssh-keys.sh
rename to files/firstboot/30-generate-ssh-keys.sh
diff --git a/files/firstboot/24-generate-machineid.sh b/files/firstboot/40-generate-machineid.sh
similarity index 100%
rename from files/firstboot/24-generate-machineid.sh
rename to files/firstboot/40-generate-machineid.sh
diff --git a/files/firstboot/25-create-resolv-symlink.sh b/files/firstboot/41-create-resolv-symlink.sh
similarity index 100%
rename from files/firstboot/25-create-resolv-symlink.sh
rename to files/firstboot/41-create-resolv-symlink.sh
diff --git a/files/firstboot/26-config-ifnames.sh b/files/firstboot/42-config-ifnames.sh
similarity index 100%
rename from files/firstboot/26-config-ifnames.sh
rename to files/firstboot/42-config-ifnames.sh
diff --git a/rpi23-gen-image.sh b/rpi23-gen-image.sh
index 048b9da..9e84dae 100755
--- a/rpi23-gen-image.sh
+++ b/rpi23-gen-image.sh
@@ -67,8 +67,11 @@ RPI_32_KERNELHEADER_URL=${RPI_32_KERNELHEADER_URL:=https://github.com/hypriot/rp
 RPI3_64_BIS_KERNEL_URL=${RPI3_64_BIS_KERNEL_URL:=https://github.com/sakaki-/bcmrpi3-kernel-bis/releases/download/4.14.80.20181113/bcmrpi3-kernel-bis-4.14.80.20181113.tar.xz}
 # Default precompiled 64bit kernel
 RPI3_64_DEF_KERNEL_URL=${RPI3_64_DEF_KERNEL_URL:=https://github.com/sakaki-/bcmrpi3-kernel/releases/download/4.14.80.20181113/bcmrpi3-kernel-4.14.80.20181113.tar.xz}
+# Sakaki BIS Kernel RPI4
+RPI4_64_DEF_KERNEL_URL=https://github.com/sakaki-/bcm2711-kernel-bis/releases/download/4.19.59.20190724/bcm2711-kernel-bis-4.19.59.20190724.tar.xz
 # Generic 
 RPI3_64_KERNEL_URL=${RPI3_64_KERNEL_URL:=$RPI3_64_DEF_KERNEL_URL}
+RPI4_64_KERNEL_URL=${RPI3_64_KERNEL_URL:=$RPI4_64_DEF_KERNEL_URL}
 # Kali kernel src - used if ENABLE_NEXMON=true (they patch the wlan kernel modul)
 KALI_KERNEL_URL=${KALI_KERNEL_URL:=https://github.com/Re4son/re4son-raspberrypi-linux.git}
 
@@ -97,6 +100,7 @@ USER_PASSWORD=${USER_PASSWORD:=raspberry}
 DEFLOCAL=${DEFLOCAL:="en_US.UTF-8"}
 TIMEZONE=${TIMEZONE:="Europe/Berlin"}
 EXPANDROOT=${EXPANDROOT:=true}
+ENABLE_DPHYSSWAP=${ENABLE_DPHYSSWAP:=true}
 
 # Keyboard settings
 XKB_MODEL=${XKB_MODEL:=""}
@@ -243,27 +247,7 @@ if [ "${APT_CACHER_RUNNING}" = "apt-cacher-ng" ] ; then
   APT_PROXY=http://127.0.0.1:3142/
 fi
 
-# netselect-apt does not know buster yet
-#if  [ "$RELEASE" = "buster" ] ; then
-#  RLS=testing
-#else
-#  RLS="$RELEASE"
-#fi
-
-#if [ -f "$(pwd)/files/apt/sources.list" ] ; then
-#rm "$(pwd)/files/apt/sources.list"
-#fi
-
-#if [ "$ENABLE_NONFREE" = true ] ; then
-#  netselect-apt --arch "$RELEASE_ARCH" -t 3 --sources --nonfree  --outfile "$(pwd)/files/apt/sources.list"  -d "$RLS"
-#else
-#  netselect-apt --arch "$RELEASE_ARCH" -t 3 --sources --outfile "$(pwd)/files/apt/sources.list" -d "$RLS"
-#fi
-
-# sed and cut the result string so we can use it as APT_SERVER
-#APT_SERVER=$(grep -m 1 http files/apt/sources.list | sed "s|http://| |g" | cut -d ' ' -f 3 | sed 's|/$|''|')
-
-# make script easier and more stable to use with convenient setup switch. Just setup SET_ARCH and RPI_MODEL and your good to go!
+# Setup architecture specific settings
 if [ -n "$SET_ARCH" ] ; then
   # 64-bit configuration
   if [ "$SET_ARCH" = 64 ] ; then
@@ -273,14 +257,19 @@ if [ -n "$SET_ARCH" ] ; then
     KERNEL_BIN_IMAGE=${KERNEL_BIN_IMAGE:="Image"}
 
     # Raspberry Pi model specific settings
-    if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; then
+    if [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
+      if [ "$RPI_MODEL" != 4 ] ; then
+        KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcmrpi3_defconfig}
+      else
+        KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2711_defconfig}
+      fi
+      
       REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-arm64"
-      KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcmrpi3_defconfig}
       RELEASE_ARCH=${RELEASE_ARCH:=arm64}
       KERNEL_IMAGE=${KERNEL_IMAGE:=kernel8.img}
       CROSS_COMPILE=${CROSS_COMPILE:=aarch64-linux-gnu-}
     else
-      echo "error: Only Raspberry PI 3 and 3B+ support 64-bit"
+      echo "error: Only Raspberry PI 3, 3B+ and 4 support 64-bit"
       exit 1
     fi
   fi
@@ -302,9 +291,14 @@ if [ -n "$SET_ARCH" ] ; then
     fi
 
     # Raspberry Pi model specific settings
-    if [ "$RPI_MODEL" = 2 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; then
+    if [ "$RPI_MODEL" = 2 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
+      if [ "$RPI_MODEL" != 4 ] ; then
+        KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2709_defconfig}
+      else
+        KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2711_defconfig}
+      fi
+      
       REQUIRED_PACKAGES="${REQUIRED_PACKAGES} crossbuild-essential-armhf"
-      KERNEL_DEFCONFIG=${KERNEL_DEFCONFIG:=bcm2709_defconfig}
       RELEASE_ARCH=${RELEASE_ARCH:=armhf}
       KERNEL_IMAGE=${KERNEL_IMAGE:=kernel7.img}
       CROSS_COMPILE=${CROSS_COMPILE:=arm-linux-gnueabihf-}
@@ -341,6 +335,10 @@ case "$RPI_MODEL" in
     DTB_FILE=${DTB_FILE:=bcm2710-rpi-3-b.dtb}
     UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_3_defconfig}
     ;;
+  4)
+    DTB_FILE=${DTB_FILE:=bcm2711-rpi-4-b.dtb}
+    UBOOT_CONFIG=${UBOOT_CONFIG:=rpi_4_defconfig}
+    ;;
   *)
     echo "error: Raspberry Pi model $RPI_MODEL is not supported!"
     exit 1
@@ -348,13 +346,13 @@ case "$RPI_MODEL" in
 esac
 
 # Raspberry PI 0,3,3P with Bluetooth and Wifi onboard
-if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] ; then
+if [ "$RPI_MODEL" = 0 ] || [ "$RPI_MODEL" = 3 ] || [ "$RPI_MODEL" = 3P ] || [ "$RPI_MODEL" = 4 ] ; then
   # Include bluetooth packages on supported boards
   if [ "$ENABLE_BLUETOOTH" = true ] ; then
     APT_INCLUDES="${APT_INCLUDES},bluetooth,bluez"
   fi
   if [ "$ENABLE_WIRELESS" = true ] ; then
-    APT_INCLUDES="${APT_INCLUDES},wireless-tools,crda,wireless-regdb,firmware-brcm80211"
+    APT_INCLUDES="${APT_INCLUDES},wireless-tools,crda,wireless-regdb"
   fi
 else # Raspberry PI 1,1P,2 without Wifi and bluetooth onboard
   # Check if the internal wireless interface is not supported by the RPi model
@@ -571,6 +569,11 @@ if [ "$EXPANDROOT" = true ] ; then
   APT_INCLUDES="${APT_INCLUDES},parted"
 fi
 
+# Add dphys-swapfile package, required to enable swap
+if [ "$ENABLE_DPHYSSWAP" = true ] ; then
+  APT_INCLUDES="${APT_INCLUDES},dphys-swapfile"
+fi
+
 # Add dbus package, recommended if using systemd
 if [ "$ENABLE_DBUS" = true ] ; then
   APT_INCLUDES="${APT_INCLUDES},dbus"
diff --git a/templates/rpi1buster b/templates/rpi1buster
index b365f59..e63bb45 100644
--- a/templates/rpi1buster
+++ b/templates/rpi1buster
@@ -1,4 +1,4 @@
-# Configuration template file used by rpi23-gen-image.sh
-RPI_MODEL=3
-RELEASE=buster
-BUILD_KERNEL=true
+# Configuration template file used by rpi23-gen-image.sh
+RPI_MODEL=3
+RELEASE=buster
+BUILD_KERNEL=true
diff --git a/templates/rpi1buster~HEAD b/templates/rpi1buster~HEAD
new file mode 100644
index 0000000..b365f59
--- /dev/null
+++ b/templates/rpi1buster~HEAD
@@ -0,0 +1,4 @@
+# Configuration template file used by rpi23-gen-image.sh
+RPI_MODEL=3
+RELEASE=buster
+BUILD_KERNEL=true
diff --git a/templates/rpi1buster~test b/templates/rpi1buster~test
new file mode 100644
index 0000000..b365f59
--- /dev/null
+++ b/templates/rpi1buster~test
@@ -0,0 +1,4 @@
+# Configuration template file used by rpi23-gen-image.sh
+RPI_MODEL=3
+RELEASE=buster
+BUILD_KERNEL=true
diff --git a/templates/rpi2jessie b/templates/rpi2jessie
deleted file mode 100644
index c4d27dd..0000000
--- a/templates/rpi2jessie
+++ /dev/null
@@ -1,2 +0,0 @@
-# Configuration template file used by rpi23-gen-image.sh
-RELEASE=jessie
diff --git a/templates/rpi3-stretch-arm64-4.14.y b/templates/rpi3-stretch-arm64-4.14.y
index 0c5cfaf..fee8f07 100644
--- a/templates/rpi3-stretch-arm64-4.14.y
+++ b/templates/rpi3-stretch-arm64-4.14.y
@@ -1,15 +1,15 @@
-# Configuration template file used by rpi23-gen-image.sh
-# Debian Stretch using the Arm64 for kernel compilation and Debian distribution.
-
-RPI_MODEL=3
-RELEASE=stretch
-BUILD_KERNEL=true
-KERNEL_ARCH=arm64
-RELEASE_ARCH=arm64
-CROSS_COMPILE=aarch64-linux-gnu-
-QEMU_BINARY=/usr/bin/qemu-aarch64-static
-KERNEL_DEFCONFIG=bcmrpi3_defconfig
-KERNEL_BIN_IMAGE=Image
-KERNEL_IMAGE=kernel8.img
-KERNEL_BRANCH=rpi-4.14.y
-ENABLE_WIRELESS=true
+# Configuration template file used by rpi23-gen-image.sh
+# Debian Stretch using the Arm64 for kernel compilation and Debian distribution.
+
+RPI_MODEL=3
+RELEASE=stretch
+BUILD_KERNEL=true
+KERNEL_ARCH=arm64
+RELEASE_ARCH=arm64
+CROSS_COMPILE=aarch64-linux-gnu-
+QEMU_BINARY=/usr/bin/qemu-aarch64-static
+KERNEL_DEFCONFIG=bcmrpi3_defconfig
+KERNEL_BIN_IMAGE=Image
+KERNEL_IMAGE=kernel8.img
+KERNEL_BRANCH=rpi-4.14.y
+ENABLE_WIRELESS=true
diff --git a/templates/rpi3-stretch-arm64-4.14.y~HEAD b/templates/rpi3-stretch-arm64-4.14.y~HEAD
new file mode 100644
index 0000000..0c5cfaf
--- /dev/null
+++ b/templates/rpi3-stretch-arm64-4.14.y~HEAD
@@ -0,0 +1,15 @@
+# Configuration template file used by rpi23-gen-image.sh
+# Debian Stretch using the Arm64 for kernel compilation and Debian distribution.
+
+RPI_MODEL=3
+RELEASE=stretch
+BUILD_KERNEL=true
+KERNEL_ARCH=arm64
+RELEASE_ARCH=arm64
+CROSS_COMPILE=aarch64-linux-gnu-
+QEMU_BINARY=/usr/bin/qemu-aarch64-static
+KERNEL_DEFCONFIG=bcmrpi3_defconfig
+KERNEL_BIN_IMAGE=Image
+KERNEL_IMAGE=kernel8.img
+KERNEL_BRANCH=rpi-4.14.y
+ENABLE_WIRELESS=true
diff --git a/templates/rpi3-stretch-arm64-4.14.y~test b/templates/rpi3-stretch-arm64-4.14.y~test
new file mode 100644
index 0000000..0c5cfaf
--- /dev/null
+++ b/templates/rpi3-stretch-arm64-4.14.y~test
@@ -0,0 +1,15 @@
+# Configuration template file used by rpi23-gen-image.sh
+# Debian Stretch using the Arm64 for kernel compilation and Debian distribution.
+
+RPI_MODEL=3
+RELEASE=stretch
+BUILD_KERNEL=true
+KERNEL_ARCH=arm64
+RELEASE_ARCH=arm64
+CROSS_COMPILE=aarch64-linux-gnu-
+QEMU_BINARY=/usr/bin/qemu-aarch64-static
+KERNEL_DEFCONFIG=bcmrpi3_defconfig
+KERNEL_BIN_IMAGE=Image
+KERNEL_IMAGE=kernel8.img
+KERNEL_BRANCH=rpi-4.14.y
+ENABLE_WIRELESS=true