diff --git a/Dockerfile b/Dockerfile
index 35f483a..2e53149 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,10 +3,11 @@ FROM debian:buster
 ENV DEBIAN_FRONTEND noninteractive
 
 RUN apt-get -y update && \
-    apt-get -y install \
+    apt-get -y install --no-install-recommends \
         git vim parted \
         quilt coreutils qemu-user-static debootstrap zerofree zip dosfstools \
         bsdtar libcap2-bin rsync grep udev xz-utils curl xxd file kmod bc\
+        binfmt-support ca-certificates \
     && rm -rf /var/lib/apt/lists/*
 
 COPY . /pi-gen/
diff --git a/README.md b/README.md
index ec4f65c..29d8166 100644
--- a/README.md
+++ b/README.md
@@ -36,6 +36,11 @@ The following environment variables are supported:
    but you should use something else for a customized version.  Export files
    in stages may add suffixes to `IMG_NAME`.
 
+ * `RELEASE` (Default: buster)
+
+   The release version to build images against. Valid values are jessie, stretch
+   buster, bullseye, and testing.
+
  * `APT_PROXY` (Default: unset)
 
    If you require the use of an apt proxy, set it here.  This proxy setting
diff --git a/build-docker.sh b/build-docker.sh
index 79b68d4..b6a9ea3 100755
--- a/build-docker.sh
+++ b/build-docker.sh
@@ -32,7 +32,7 @@ done
 
 # Ensure that the configuration file is an absolute path
 if test -x /usr/bin/realpath; then
-	CONFIG_FILE=$(realpath -s "$CONFIG_FILE")
+	CONFIG_FILE=$(realpath -s "$CONFIG_FILE" || realpath "$CONFIG_FILE")
 fi
 
 # Ensure that the confguration file is present
@@ -41,7 +41,7 @@ if test -z "${CONFIG_FILE}"; then
 	exit 1
 else
 	# shellcheck disable=SC1090
-	source "${CONFIG_FILE}"
+	source ${CONFIG_FILE}
 fi
 
 CONTAINER_NAME=${CONTAINER_NAME:-pigen_work}
diff --git a/build.sh b/build.sh
index a906e10..a8247ab 100755
--- a/build.sh
+++ b/build.sh
@@ -20,7 +20,7 @@ EOF
 			PACKAGES="$(sed -f "${SCRIPT_DIR}/remove-comments.sed" < "${i}-packages-nr")"
 			if [ -n "$PACKAGES" ]; then
 				on_chroot << EOF
-apt-get install --no-install-recommends -y $PACKAGES
+apt-get -o APT::Acquire::Retries=3 install --no-install-recommends -y $PACKAGES
 EOF
 			fi
 			log "End ${SUB_STAGE_DIR}/${i}-packages-nr"
@@ -30,7 +30,7 @@ EOF
 			PACKAGES="$(sed -f "${SCRIPT_DIR}/remove-comments.sed" < "${i}-packages")"
 			if [ -n "$PACKAGES" ]; then
 				on_chroot << EOF
-apt-get install -y $PACKAGES
+apt-get -o APT::Acquire::Retries=3 install -y $PACKAGES
 EOF
 			fi
 			log "End ${SUB_STAGE_DIR}/${i}-packages"
@@ -166,6 +166,7 @@ export TARGET_HOSTNAME=${TARGET_HOSTNAME:-raspberrypi}
 
 export FIRST_USER_NAME=${FIRST_USER_NAME:-pi}
 export FIRST_USER_PASS=${FIRST_USER_PASS:-raspberry}
+export RELEASE=${RELEASE:-buster}
 export WPA_ESSID
 export WPA_PASSWORD
 export WPA_COUNTRY
diff --git a/export-noobs/00-release/00-run.sh b/export-noobs/00-release/00-run.sh
index 1d0b12f..18a3a5d 100755
--- a/export-noobs/00-release/00-run.sh
+++ b/export-noobs/00-release/00-run.sh
@@ -36,6 +36,7 @@ sed "${NOOBS_DIR}/partitions.json" -i -e "s|ROOT_NOM|${ROOT_NOM}|"
 sed "${NOOBS_DIR}/os.json" -i -e "s|UNRELEASED|${IMG_DATE}|"
 sed "${NOOBS_DIR}/os.json" -i -e "s|NOOBS_NAME|${NOOBS_NAME}|"
 sed "${NOOBS_DIR}/os.json" -i -e "s|NOOBS_DESCRIPTION|${NOOBS_DESCRIPTION}|"
+sed "${NOOBS_DIR}/os.json" -i -e "s|RELEASE|${RELEASE}|"
 
 sed "${NOOBS_DIR}/release_notes.txt" -i -e "s|UNRELEASED|${IMG_DATE}|"
 
diff --git a/export-noobs/00-release/files/os.json b/export-noobs/00-release/files/os.json
index afa9f9a..e231238 100644
--- a/export-noobs/00-release/files/os.json
+++ b/export-noobs/00-release/files/os.json
@@ -16,5 +16,5 @@
     ],
     "url": "http://www.raspbian.org/",
     "username": "pi",
-    "version": "buster"
+    "version": "RELEASE"
 }
diff --git a/export-noobs/00-release/files/release_notes.txt b/export-noobs/00-release/files/release_notes.txt
index 45e8576..8d7f014 100644
--- a/export-noobs/00-release/files/release_notes.txt
+++ b/export-noobs/00-release/files/release_notes.txt
@@ -1,5 +1,38 @@
 UNRELEASED:
-  *
+  * Raspberry Pi Configuration - screen blanking setting disabled if Xscreensaver is installed
+  * Bug fix - switch to turn off VNC server in Raspberry Pi Configuration has no effect
+  * Bug fix - fix %20 characters in file names
+  * Linux kernel 4.19.97
+  * Raspberry Pi firmware 9a34efbf2fc6a27231607ce91a7cb6bf3bdbc0c5
+    - gencmd: Fix measure_clock name for CLOCK_OUTPUT_108
+    - mmal isp: Remote alignment requirements for RGB24 formats
+    - Add missing flags for VC_IMAGE_PROP_YUVUV_4K_CHROMA_ALIGN
+    - platform: Compromise on gpu overclock settings
+2020-02-05:
+  * Version 3.2.6 of Thonny included - significant improvements in speed, particularly when debugging
+  * Version 1.0.4 of Scratch 3 included - adds new "display stage" and "display sprite" blocks to SenseHAT extension, and loading of files from command line
+  * Version 32.0.0.314 of Flash player included
+  * Version 1.0.3 of NodeRED included
+  * Version 6.6.0 of RealVNC Server and version 6.19.923 of RealVNC Viewer included - adds support for audio
+  * Version 78.0.3904.108 of Chromium included
+  * Mesa updated to 19.3.2 for OpenGL ES 3.1 conformance
+  * Pixel doubling option added in Raspberry Pi Configuration on platforms using FKMS display driver
+  * Orca screen reader added to Recommended Software
+  * Code The Classics Python games added to Recommended Software
+  * File manager - new "places" pane added at top of sidebar to show mounted drives in simplified view; "new folder" icon added to taskbar; expanders in directory browser now correctly show state of subfolders
+  * Multiple monitor support improved - alignment of icons on second desktop corrected, Appearance Settings opens on correct tab when launched from context menu
+  * Raspberry Pi Touchscreen correctly aligned with display
+  * System clock synchronised before installing new packages in startup wizard and Recommended Software
+  * Mixer dialogs added to taskbar volume plugin; separate Audio Preferences application removed
+  * Raspberry Pi Configuration - separate tab added for display options; screen blanking control added
+  * Volume taskbar plugin and raspi-config modified to support separate ALSA devices for internal audio outputs (analogue and HDMI 1 and 2)
+  * Robustness improvements in volume, ejecter and battery taskbar plugins
+  * Movement of mouse pointer to menu button on startup now controlled by point_at_menu parameter in Global section of lxpanel configuration file
+  * Ctrl-Alt-Del and Ctrl-Alt-End shortcuts added to open shutdown options box
+  * Ctrl-Shift-Esc shortcut added to open task manager
+  * Enabled NEON routines in OpenSSL
+  * Linux kernel 4.19.97
+  * Raspberry Pi firmware 149cd7f0487e08e148efe604f8d4d359541cecf4
 2019-09-26:
   * rpi-eeprom included
     - This will automatically update the SPI EEPROM on the Raspberry Pi 4 to the latest stable version.
diff --git a/stage0/00-configure-apt/00-run.sh b/stage0/00-configure-apt/00-run.sh
index 9d21ffb..d10a49f 100755
--- a/stage0/00-configure-apt/00-run.sh
+++ b/stage0/00-configure-apt/00-run.sh
@@ -2,6 +2,8 @@
 
 install -m 644 files/sources.list "${ROOTFS_DIR}/etc/apt/"
 install -m 644 files/raspi.list "${ROOTFS_DIR}/etc/apt/sources.list.d/"
+sed -i "s/RELEASE/${RELEASE}/g" "${ROOTFS_DIR}/etc/apt/sources.list"
+sed -i "s/RELEASE/${RELEASE}/g" "${ROOTFS_DIR}/etc/apt/sources.list.d/raspi.list"
 
 if [ -n "$APT_PROXY" ]; then
 	install -m 644 files/51cache "${ROOTFS_DIR}/etc/apt/apt.conf.d/51cache"
diff --git a/stage0/00-configure-apt/files/raspi.list b/stage0/00-configure-apt/files/raspi.list
index 122287e..41c5a70 100644
--- a/stage0/00-configure-apt/files/raspi.list
+++ b/stage0/00-configure-apt/files/raspi.list
@@ -1,3 +1,3 @@
-deb http://archive.raspberrypi.org/debian/ buster main
+deb http://archive.raspberrypi.org/debian/ RELEASE main
 # Uncomment line below then 'apt-get update' to enable 'apt-get source'
-#deb-src http://archive.raspberrypi.org/debian/ buster main
+#deb-src http://archive.raspberrypi.org/debian/ RELEASE main
diff --git a/stage0/00-configure-apt/files/sources.list b/stage0/00-configure-apt/files/sources.list
index 61820ac..4a5dd8a 100644
--- a/stage0/00-configure-apt/files/sources.list
+++ b/stage0/00-configure-apt/files/sources.list
@@ -1,3 +1,3 @@
-deb http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free rpi
+deb http://raspbian.raspberrypi.org/raspbian/ RELEASE main contrib non-free rpi
 # Uncomment line below then 'apt-get update' to enable 'apt-get source'
-#deb-src http://raspbian.raspberrypi.org/raspbian/ buster main contrib non-free rpi
+#deb-src http://raspbian.raspberrypi.org/raspbian/ RELEASE main contrib non-free rpi
diff --git a/stage0/prerun.sh b/stage0/prerun.sh
index 9ce3e02..3b25783 100755
--- a/stage0/prerun.sh
+++ b/stage0/prerun.sh
@@ -1,5 +1,5 @@
 #!/bin/bash -e
 
 if [ ! -d "${ROOTFS_DIR}" ]; then
-	bootstrap buster "${ROOTFS_DIR}" http://raspbian.raspberrypi.org/raspbian/
+	bootstrap ${RELEASE} "${ROOTFS_DIR}" http://raspbian.raspberrypi.org/raspbian/
 fi
diff --git a/stage2/02-net-tweaks/01-run.sh b/stage2/02-net-tweaks/01-run.sh
index 63fbff7..0929755 100755
--- a/stage2/02-net-tweaks/01-run.sh
+++ b/stage2/02-net-tweaks/01-run.sh
@@ -27,5 +27,5 @@ fi
 
 # Disable wifi on 5GHz models
 mkdir -p "${ROOTFS_DIR}/var/lib/systemd/rfkill/"
-echo 1 > "${ROOTFS_DIR}/var/lib/systemd/rfkill/platform-3f300000.mmc:wlan"
-echo 1 > "${ROOTFS_DIR}/var/lib/systemd/rfkill/platform-fe300000.mmc:wlan"
+echo 1 > "${ROOTFS_DIR}/var/lib/systemd/rfkill/platform-3f300000.mmcnr:wlan"
+echo 1 > "${ROOTFS_DIR}/var/lib/systemd/rfkill/platform-fe300000.mmcnr:wlan"
diff --git a/stage4/03-magpi/00-run.sh b/stage4/03-magpi/00-run.sh
index cc5a820..b27b85f 100755
--- a/stage4/03-magpi/00-run.sh
+++ b/stage4/03-magpi/00-run.sh
@@ -1,12 +1,12 @@
 #!/bin/sh -e
 
 magpi_regex="MagPi[[:digit:]]*.pdf"
-magpi_loc="https://www.raspberrypi.org/magpi-issues"
-magpi_latest="$(curl "$magpi_loc/?C=M;O=D" -s | grep "$magpi_regex" -m 1 -o | head -n 1)"
+magpi_loc="$(curl -s https://magpi.raspberrypi.org/latest-pdf)"
+magpi_latest="$(echo "$magpi_loc" | grep "$magpi_regex" -m 1 -o)"
 
 if [ ! -f "files/$magpi_latest" ]; then
 	find files/ -regextype grep -regex "files/$magpi_regex" -delete
-	wget "$magpi_loc/$magpi_latest" -O "files/$magpi_latest"
+	wget "$magpi_loc" -O "files/$magpi_latest"
 fi
 
 file "files/$magpi_latest" | grep -q "PDF document"
diff --git a/stage5/00-install-extras/00-packages b/stage5/00-install-extras/00-packages
index afe5aee..609e718 100644
--- a/stage5/00-install-extras/00-packages
+++ b/stage5/00-install-extras/00-packages
@@ -13,3 +13,4 @@ nodered
 realvnc-vnc-viewer
 
 python-games
+code-the-classics