diff --git a/.github/workflows/_xm2oipc.sh b/.github/workflows/_xm2oipc.sh
index 3eece92..9c1404a 100755
--- a/.github/workflows/_xm2oipc.sh
+++ b/.github/workflows/_xm2oipc.sh
@@ -106,7 +106,6 @@ SOC="${SOC:-hi3516ev200}"
 [[ ${SENSOR} ]] && SENSOR="sensor=${SENSOR}"
 
 FLASH_SIZE="${FLASH_SIZE:-0x800000}"
-ROOTFS_DATA="${ROOTFS_DATA:-$(($FLASH_SIZE - $ROOTFS_E ))}"
 
 WORKDIR="workdir"
 OUTPUTDIR="${OUTPUTDIR:-..}"
@@ -118,10 +117,44 @@ IFS=" "
 mkdir -p ${WORKDIR}
 mkdir -p ${OUTPUTDIR}
 
-tar -xvz -f openipc.${SOC}-nor-${RELEASE:-lite}.tgz -C ${WORKDIR}/ --exclude "*.md5sum" || exit 1
+PACKAGE=openipc.${SOC}-nor-${RELEASE:-lite}
+if [ -f ${PACKAGE}.tgz ]; then
+  tar -xvz -f ${PACKAGE}.tgz -C ${WORKDIR}/ --exclude "*.md5sum" || exit 1
+
+  # Check if give files exceed partition boundaries
+  [[ $(stat --printf="%s" ${WORKDIR}/rootfs*) -gt $(($ROOTFS_E - $ROOTFS_A)) ]] || [[ $(stat --printf="%s" ${WORKDIR}/uImage*) -gt $(($KERNEL_E - $KERNEL_A)) ]] && echo "Filesize exceeds boundaries" && exit 1
+elif [ -f ${PACKAGE}-split.tgz ]; then
+  # The split NOR layout (OpenIPC/firmware#2668): firmware.bin is the uImage,
+  # padded to 64 KiB, then the squashfs, written whole at the kernel's address.
+  # The kernel finds the squashfs after itself and takes rootfs_data from the
+  # rest of the chip, whatever mtdparts and root= the env below passes, so a
+  # board ships this once its rootfs outgrows the fixed slot. It is burned as
+  # the same two images as the fixed slots, cut at the squashfs, which lands
+  # firmware.bin on the flash byte for byte; only the boundaries move.
+  tar -xvz -f ${PACKAGE}-split.tgz -C ${WORKDIR}/ --exclude "*.md5sum" || exit 1
+  FIRMWARE=$(ls ${WORKDIR}/firmware.bin*)
+  FIRMWARE_SIZE=$(stat --printf="%s" ${FIRMWARE})
+  # The uImage header's data size (bytes 12..15, big-endian), plus the 64-byte
+  # header, in whole 64 KiB blocks: where the squashfs starts.
+  [ "$(od -An -tx1 -N4 ${FIRMWARE} | tr -d ' \n')" = "27051956" ] || { echo "${FIRMWARE} does not start with a uImage"; exit 1; }
+  KERNEL_BLOCKS=$(( (64 + 0x$(od -An -tx1 -j12 -N4 ${FIRMWARE} | tr -d ' \n') + 0xFFFF) / 0x10000 ))
+  # The bootcmd reads 2 MiB from the kernel's address; the firmware build
+  # checks the uImage against that, and so does this.
+  [ $((KERNEL_BLOCKS * 0x10000)) -le $(($KERNEL_E - $KERNEL_A)) ] || { echo "Filesize exceeds boundaries"; exit 1; }
+  ROOTFS_A=$(printf "0x%x" $(($KERNEL_A + KERNEL_BLOCKS * 0x10000)))
+  KERNEL_E=${ROOTFS_A}
+  ROOTFS_E=$(printf "0x%x" $(( ($KERNEL_A + FIRMWARE_SIZE + 0xFFFF) / 0x10000 * 0x10000 )))
+  # The firmware build leaves at least 256 KiB of rootfs_data; so does this.
+  [ $(($ROOTFS_E + 0x40000)) -le $(($FLASH_SIZE)) ] || { echo "Filesize exceeds boundaries"; exit 1; }
+  head -c $((KERNEL_BLOCKS * 0x10000)) ${FIRMWARE} > ${WORKDIR}/uImage
+  tail -c +$((KERNEL_BLOCKS * 0x10000 + 1)) ${FIRMWARE} > ${WORKDIR}/rootfs.squashfs
+  rm -f ${FIRMWARE}
+else
+  echo "Neither ${PACKAGE}.tgz nor ${PACKAGE}-split.tgz is here"
+  exit 1
+fi
 
-# Check if give files exceed partition boundaries
-[[ $(stat --printf="%s" ${WORKDIR}/rootfs*) -gt $(($ROOTFS_E - $ROOTFS_A)) ]] || [[ $(stat --printf="%s" ${WORKDIR}/uImage*) -gt $(($KERNEL_E - $KERNEL_A)) ]] && echo "Filesize exceeds boundaries" && exit 1
+ROOTFS_DATA="${ROOTFS_DATA:-$(($FLASH_SIZE - $ROOTFS_E ))}"
 
 # Generate Readme
 README=$(cat <<-EOF
diff --git a/.github/workflows/xm.yml b/.github/workflows/xm.yml
index c9cdc22..fc93078 100644
--- a/.github/workflows/xm.yml
+++ b/.github/workflows/xm.yml
@@ -29,30 +29,37 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v2.3.4
       - name: Fetch OpenIPC release
+        # A board whose rootfs outgrows its fixed slot publishes only the
+        # -split package (OpenIPC/firmware#2666); _xm2oipc.sh takes whichever
+        # of the two is here, the fixed-slot one first.
         run: |
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3516cv100-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3518cv100-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3518ev100-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3516cv200-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3516dv100-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3518ev200-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3516cv300-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3516ev100-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3516ev300-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3518ev300-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3516ev200-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3536cv100-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.hi3536dv100-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.gk7201v200-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.gk7205v200-nor-lite.tgz
+          for soc in hi3516cv100 \
+            hi3518cv100 \
+            hi3518ev100 \
+            hi3516cv200 \
+            hi3516dv100 \
+            hi3518ev200 \
+            hi3516cv300 \
+            hi3516ev100 \
+            hi3516ev300 \
+            hi3518ev300 \
+            hi3516ev200 \
+            hi3536cv100 \
+            hi3536dv100 \
+            gk7201v200 \
+            gk7205v200 \
+            gk7205v300 \
+            gk7605v100 \
+            gk7205v500 \
+            xm530 \
+            xm510 \
+            nt98562 \
+            nt98566; do
+            wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.$soc-nor-lite.tgz ||
+              echo "openipc.$soc-nor-lite.tgz is not published"
+            wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.$soc-nor-lite-split.tgz || true
+          done
           # wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.gk7205v200-nor-fpv.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.gk7205v300-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.gk7605v100-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.gk7205v500-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.xm530-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.xm510-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.nt98562-nor-lite.tgz
-          wget -q https://github.com/OpenIPC/firmware/releases/download/latest/openipc.nt98566-nor-lite.tgz
       - name: Create firmwares
         run: |
             export RUN="$GITHUB_WORKSPACE/.github/workflows/_xm2oipc.sh"