diff --git a/utils/nwztools/scripts/Makefile b/utils/nwztools/scripts/Makefile
index 590fe775ba..36ccfbb496 100644
--- a/utils/nwztools/scripts/Makefile
+++ b/utils/nwztools/scripts/Makefile
@@ -5,36 +5,73 @@ scsitool:="../scsitools/scsitool"
 
 all:
 	@echo "Please select an action:"
-	@echo "- update: uses script update.sh"
 	@echo "- dump_rootfs: dumps the root filesystem to rootfs.tgz"
-	@echo "- my_update: craft an arbitrary upgrade script found in my_update.sh"
-	@echo "- do_fw_upgrade: send a firmware upgrade to the device in NWZ_DEV"
+	@echo "- do_fw_upgrade: put the device in NWZ_DEV in firmware upgrade mode"
+	@echo "- copy_fw_upgrade: copy firmware to a device with the right name"
+	@echo "- exec_file: craft an upgrade that executes a script/executable"
 	@echo "- list_targets: produce of list of available targets"
 
-my_update: my_update.upg
-dump_rootfs: dump_rootfs.upg
-
-%.upg: %.sh
-ifndef NWZ_TARGET
-	@echo "Please set NWZ_TARGET to your target. For example:"
-	@echo "make $@ NWZ_TARGET=nwz-e463"
-	@echo "Run 'make list_targets' to get a list of all targets"
+ifndef UPG
+want_upg:
+	$(info Please set UPG to the upg filename. For example:)
+	$(info make exec_file UPG=hello_world.upg ...)
+	$(error "")
 else
-	@echo "Target: $(NWZ_TARGET)"
-	$(upgtool) -c -m $(NWZ_TARGET) $@ $^
+want_upg: ;
 endif
 
+ifndef EXEC
+want_exec:
+	$(info Please set EXEC to the executable filename. For example:)
+	$(info make exec_file EXEC=hello_world.sh ...)
+	$(error "")
+else
+want_exec: ;
+endif
+
+ifndef NWZ_TARGET
+want_target:
+	$(info Please set NWZ_TARGET to your target. For example:)
+	$(info make dump_rootfs NWZ_TARGET=nwz-e463)
+	$(info Run 'make list_targets' to get a list of all targets)
+	$(error "")
+else
+want_target: ;
+endif
+
+ifndef NWZ_DEV
+want_dev:
+	$(info Please set NWZ_DEV to your dev. For example:)
+	$(info make do_fw_upgrade NWZ_DEV=/dev/sdx)
+else
+want_dev: ;
+endif
+
+ifndef NWZ_MOUNT
+want_mount:
+	$(info Please set NWZ_MOUNT to your dev mount point. For example:)
+	$(info make copy_fw_upgrade NWZ_MOUNT=/media/WALKMAN ...)
+else
+want_mount: ;
+endif
+
+UPGPACK=$(upgtool) -c -m $(NWZ_TARGET) $(UPG) $(1)
+
+exec_file: want_target want_exec want_upg
+	$(call UPGPACK, exec_file.sh $(EXEC))
+
+dump_rootfs: want_target want_upg
+	$(call UPGPACK, dump_rootfs.sh)
+
 clean:
 	rm -rf *.upg
 
 list_targets:
 	$(upgtool) -m ?; true # upgtool returns an error in this case, ignore it
 
-do_fw_upgrade:
-ifdef NWZ_DEV
+copy_fw_upgrade: want_upg want_mount
+	cp $(UPG) "$(NWZ_MOUNT)/NW_WM_FW.UPG"
+
+do_fw_upgrade: want_dev
 	@echo "Device: $(NWZ_DEV)"
 	$(scsitool) $(NWZ_DEV) do_fw_upgrade
-else
-	@echo "Please set NWZ_DEV to your dev. For example:"
-	@echo "make do_fw_upgrade NWZ_DEV=/dev/sdx"
-endif
diff --git a/utils/nwztools/scripts/README b/utils/nwztools/scripts/README
index e103647bd6..1744fbe9fe 100644
--- a/utils/nwztools/scripts/README
+++ b/utils/nwztools/scripts/README
@@ -46,7 +46,7 @@ your device to build this firmware upgrade. Once you known it, run
 to list all available targets. For example if your targets is one of the
 NWZ-E460 series, the corresponding target is nwz-e46x.
 Once you have identified the target. Run
-  make dump_rootfs NWZ_TARGET=nwz-exyz
+  make dump_rootfs NWZ_TARGET=nwz-exyz UPG=dump_rootfs.upg
 (replace nwz-exyz with your target)
 This command will produce a firmware upgrade file called
   dump_rootfs.upg
diff --git a/utils/nwztools/scripts/exec_file.sh b/utils/nwztools/scripts/exec_file.sh
new file mode 100644
index 0000000000..059014de2c
--- /dev/null
+++ b/utils/nwztools/scripts/exec_file.sh
@@ -0,0 +1,62 @@
+#!/bin/sh
+
+# The updater script on the NWZ has a major bug/feature:
+# it does NOT clear the update flag if the update scrit fails
+# thus causing a update/reboot loop and a bricked device
+# always clear to make sure we don't end up being screwed
+nvpflag fup 0xFFFFFFFF
+
+#
+# This script extracts the second file from the UPG to /tmp and runs it
+#
+
+
+# go to /tmp
+cd /tmp
+
+# get content partition path
+CONTENTS="/contents"
+CONTENTS_PART=`mount | grep contents | awk '{ print $1 }'`
+
+lcdmsg -c -f /usr/local/bin/font_08x12.bmp -l 0,3 "Contents partition:\n$CONTENTS_PART"
+
+# 2) We need to remount the contents partition in read-write mode be able to
+# write something on it
+lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,6 "Remount $CONTENTS rw"
+if ! mount -o remount,rw $CONTENTS_PART $CONTENTS
+then
+    lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,7 "ERROR: remount failed"
+    sleep 3
+    exit 0
+fi
+
+# get update filename
+_UPDATE_FN_=`nvpstr ufn`
+
+# extract second file
+fwpchk -f /contents/$_UPDATE_FN_.UPG -c -1 exec
+if [ "$?" != 0 ]; then
+    lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,7 "ERROR: no file to execute"
+    sleep 3
+    exit 0
+fi
+
+# make it executable
+chmod 755 exec
+if [ "$?" != 0 ]; then
+    lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,7 "ERROR: cannot make it executable"
+    sleep 3
+    exit 0
+fi
+
+# run it and redirect all outputs to exec.txt
+lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,7 "Running file..."
+/tmp/exec 2>&1 >$CONTENTS/exec.txt
+
+# 4) Success screen
+lcdmsg -f /usr/local/bin/font_08x12.bmp -l 0,15 "Rebooting in 3 seconds."
+sleep 3
+sync
+
+# finish
+exit 0