diff --git a/src/migrate_openwrt_rootfs.sh b/src/migrate_openwrt_rootfs.sh
index ef81179..40d4035 100644
--- a/src/migrate_openwrt_rootfs.sh
+++ b/src/migrate_openwrt_rootfs.sh
@@ -15,34 +15,120 @@ if [ -f /storage/old_version ]; then
 
   info "Migrate settings from $OLD_SQUASHFS_COMBINED to squashfs-combined-${OPENWRT_IMAGE_ID}.img."
 
-  # Create config backup in previos image
-  if [[ $OLD_SQUASHFS_COMBINED == *"rootfs"* ]]; then
-      warn "Using rootfs-<UUID>.img images is deprecated!"
-      mount /storage/$OLD_SQUASHFS_COMBINED /mnt
-      chroot /mnt/ mkdir -p /var/lock
-      chroot /mnt /sbin/sysupgrade -k -b /tmp/openwrt_config.tar.gz
-      mv /mnt/tmp/openwrt_config.tar.gz  /storage/config-`basename $OLD_SQUASHFS_COMBINED.img`.tar.gz
-      umount /mnt
-  else
-      /run/mount_openwrt_squashfs_combined.sh /storage/$OLD_SQUASHFS_COMBINED $CPU_ARCH
-      chroot /mnt/ mkdir -p /var/lock
-      chroot /mnt /sbin/sysupgrade -k -b /tmp/openwrt_config.tar.gz
-      mv /mnt/tmp/openwrt_config.tar.gz /storage/config-`basename $OLD_SQUASHFS_COMBINED.img`.tar.gz
-      /run/mount_openwrt_squashfs_combined.sh -u
-  fi
+  # Create config backup in previous image
+  if [[ -z "${IS_U_OS_APP}" ]]; then
+    if [[ $OLD_SQUASHFS_COMBINED == *"rootfs"* ]]; then
+        warn "Using rootfs-<UUID>.img images is deprecated!"
+        mount /storage/$OLD_SQUASHFS_COMBINED /mnt
+        chroot /mnt/ mkdir -p /var/lock
+        chroot /mnt /sbin/sysupgrade -k -b /tmp/openwrt_config.tar.gz
+        mv /mnt/tmp/openwrt_config.tar.gz  /storage/config-`basename $OLD_SQUASHFS_COMBINED.img`.tar.gz
+        umount /mnt
+    else
+        /run/mount_openwrt_squashfs_combined.sh /storage/$OLD_SQUASHFS_COMBINED $CPU_ARCH
+        chroot /mnt/ mkdir -p /var/lock
+        chroot /mnt /sbin/sysupgrade -k -b /tmp/openwrt_config.tar.gz
+        mv /mnt/tmp/openwrt_config.tar.gz /storage/config-`basename $OLD_SQUASHFS_COMBINED.img`.tar.gz
+        /run/mount_openwrt_squashfs_combined.sh -u
+    fi
 
-  # Put config backup to new squashfs-combined
-  /run/mount_openwrt_squashfs_combined.sh $SQUASHFS_COMBINED $CPU_ARCH
-  mkdir -p /mnt/root/backup
-  cp /storage/config-`basename $OLD_SQUASHFS_COMBINED.img`.tar.gz /mnt/root/backup/config.tar.gz
-  chroot /mnt/ mkdir -p /var/lock
-  chroot /mnt /sbin/sysupgrade -r /root/backup/config.tar.gz
-  /run/mount_openwrt_squashfs_combined.sh -u 
+    # Put config backup to new squashfs-combined
+    /run/mount_openwrt_squashfs_combined.sh $SQUASHFS_COMBINED $CPU_ARCH
+    mkdir -p /mnt/root/backup
+    cp /storage/config-`basename $OLD_SQUASHFS_COMBINED.img`.tar.gz /mnt/root/backup/config.tar.gz
+    chroot /mnt/ mkdir -p /var/lock
+    chroot /mnt /sbin/sysupgrade -r /root/backup/config.tar.gz
+    /run/mount_openwrt_squashfs_combined.sh -u 
+  else
+    # Since Weidmueller u-OS doesn't support squashfs and f2fs we are using the OpenWrt image to do the settings migration
+    # This is a workaround!
+   
+    # Make a copy from the original OpenWrt image
+    cp /var/vm/squashfs-combined-${OPENWRT_VERSION}.img.gz /tmp/squashfs-combined-tmp.img.gz
+    gzip -d /tmp/squashfs-combined-tmp.img.gz
+
+    # Boot a temporary OpenWrt
+    qemu-system-aarch64 -M virt -cpu host --enable-kvm -smp 2 -nographic -nodefaults -m 256 \
+     -bios /usr/share/qemu/edk2-aarch64-code.fd \
+     -blockdev driver=raw,node-name=hd0,cache.direct=on,file.driver=file,file.filename=/tmp/squashfs-combined-tmp.img \
+     -device virtio-blk-pci,drive=hd0 \
+     -blockdev driver=raw,node-name=hd1,cache.direct=on,file.driver=file,file.filename=/storage/$OLD_SQUASHFS_COMBINED \
+     -device virtio-blk-pci,drive=hd1 \
+     -blockdev driver=raw,node-name=hd2,cache.direct=on,file.driver=file,file.filename=$SQUASHFS_COMBINED \
+     -device virtio-blk-pci,drive=hd2 \
+     -device virtio-net,netdev=qlan0 -netdev user,id=qlan0,net=172.31.1.0/24,hostfwd=tcp::1022-172.31.1.1:22 \
+     -device virtio-net,netdev=qwan0 -netdev user,id=qwan0 \
+     -daemonize
+
+    # Wait until OpenWrt has booted
+    until ssh -o ConnectTimeout=10 -o StrictHostKeyChecking=accept-new root@localhost -p 1022 "cat /etc/banner"; do echo "Waiting for OpenWrt boot ..."; sleep 1; done
+    ssh root@localhost -p 1022 "mkdir -p /tmp/squashfs_dir"
+    ssh root@localhost -p 1022 "mkdir -p /tmp/userdata_dir"
+
+    if [[ $OLD_SQUASHFS_COMBINED == *"rootfs"* ]]; then
+        warn "Using rootfs-<UUID>.img images is deprecated!"
+        ssh root@localhost -p 1022 "mount /dev/vdb2 /mnt"
+        ssh root@localhost -p 1022 "chroot /mnt/ mkdir -p /var/lock"
+        ssh root@localhost -p 1022 "chroot /mnt /sbin/sysupgrade -k -b /tmp/openwrt_config.tar.gz"
+        ssh root@localhost -p 1022 "cp /mnt/tmp/openwrt_config.tar.gz /tmp"
+        ssh root@localhost -p 1022 "umount /mnt"
+    else
+        FILESYSTEM_OFFSETS=$(/run/mount_openwrt_squashfs_combined.sh -o /storage/$OLD_SQUASHFS_COMBINED $CPU_ARCH)
+        J2FS_OFFSET=$(echo $FILESYSTEM_OFFSETS | cut -d',' -f2)
+        ssh root@localhost -p 1022 "mount /dev/vdb2 /tmp/squashfs_dir"
+        ssh root@localhost -p 1022 "losetup -o $J2FS_OFFSET /dev/loop1 /dev/vdb"
+        ssh root@localhost -p 1022 "mount /dev/loop1 /tmp/userdata_dir"
+        ssh root@localhost -p 1022 "mount -t overlay -o lowerdir=/tmp/squashfs_dir,upperdir=/tmp/userdata_dir/upper,workdir=/tmp/userdata_dir/work overlay /mnt"
+        ssh root@localhost -p 1022 "mount -o bind /tmp/userdata_dir /mnt/overlay/"
+        ssh root@localhost -p 1022 "mount -o bind /tmp/squashfs_dir /mnt/rom/"
+        ssh root@localhost -p 1022 "mount -o bind /dev /mnt/dev"
+        ssh root@localhost -p 1022 "chroot /mnt/ mkdir -p /var/lock"
+        ssh root@localhost -p 1022 "chroot /mnt /sbin/sysupgrade -k -b /tmp/openwrt_config.tar.gz"
+        ssh root@localhost -p 1022 "cp /mnt/tmp/openwrt_config.tar.gz /tmp"
+        ssh root@localhost -p 1022 "umount /mnt/overlay"
+        ssh root@localhost -p 1022 "umount /mnt/rom"
+        ssh root@localhost -p 1022 "umount /mnt/dev"
+        ssh root@localhost -p 1022 "umount /mnt"
+        ssh root@localhost -p 1022 "umount /tmp/userdata_dir"
+        ssh root@localhost -p 1022 "umount /tmp/squashfs_dir"
+        ssh root@localhost -p 1022 "losetup -d /dev/loop1"
+    fi
+
+    # Put config backup to new squashfs-combined
+    FILESYSTEM_OFFSETS=$(/run/mount_openwrt_squashfs_combined.sh -o $SQUASHFS_COMBINED $CPU_ARCH)
+    J2FS_OFFSET=$(echo $FILESYSTEM_OFFSETS | cut -d',' -f2)
+    ssh root@localhost -p 1022 "mount /dev/vdc2 /tmp/squashfs_dir"
+    ssh root@localhost -p 1022 "losetup -o $J2FS_OFFSET /dev/loop1 /dev/vdc"
+    ssh root@localhost -p 1022 "mount /dev/loop1 /tmp/userdata_dir"
+    ssh root@localhost -p 1022 "mount -t overlay -o lowerdir=/tmp/squashfs_dir,upperdir=/tmp/userdata_dir/upper,workdir=/tmp/userdata_dir/work overlay /mnt"
+    ssh root@localhost -p 1022 "mount -o bind /tmp/userdata_dir /mnt/overlay/"
+    ssh root@localhost -p 1022 "mount -o bind /tmp/squashfs_dir /mnt/rom/"
+    ssh root@localhost -p 1022 "mount -o bind /dev /mnt/dev"
+    ssh root@localhost -p 1022 "chroot /mnt/ mkdir -p /var/lock"
+    ssh root@localhost -p 1022 "cp /tmp/openwrt_config.tar.gz /mnt/tmp"
+    ssh root@localhost -p 1022 "chroot /mnt /sbin/sysupgrade -r /tmp/openwrt_config.tar.gz"
+    ssh root@localhost -p 1022 "umount /mnt/overlay"
+    ssh root@localhost -p 1022 "umount /mnt/rom"
+    ssh root@localhost -p 1022 "umount /mnt/dev"
+    ssh root@localhost -p 1022 "umount /mnt"
+    ssh root@localhost -p 1022 "umount /tmp/userdata_dir"
+    ssh root@localhost -p 1022 "umount /tmp/squashfs_dir"
+    ssh root@localhost -p 1022 "losetup -d /dev/loop1"
+
+    # Stop VM
+    ssh root@localhost -p 1022 'sync; halt' 
+    while pgrep -x "qemu-system-aarch64" >/dev/null; do echo "Waiting for qemu exit ..."; sleep 1; done;
+
+    # Delete temporary OpenWrt image
+    rm /tmp/squashfs-combined-tmp.img
+  fi
 
   # Finally remove old squashfs-combined and old files
   rm /storage/$OLD_SQUASHFS_COMBINED
   rm /storage/old_version
-  rm /storage/config-`basename $OLD_SQUASHFS_COMBINED.img`.tar.gz
+  if [ -f storage/config-`basename $OLD_SQUASHFS_COMBINED.img`.tar.gz ]; then
+    rm /storage/config-`basename $OLD_SQUASHFS_COMBINED.img`.tar.gz
+  fi
 else
   info "squashfs-combined-${OPENWRT_IMAGE_ID}.img is up to date. Nothing to do."
 fi
\ No newline at end of file