Updated IO firmware upgrade strategy and locations

ROMFS/px4fmu_common/init.d/rcS

@@ -108,25 +108,17 @@ then
 	nshterm /dev/ttyACM0 &
 	
 	#
-	# Check if PX4IO Firmware should be upgraded (from Andrew Tridgell)
+	# Upgrade PX4IO firmware
 	#
-	if [ -f /fs/microsd/px4io.bin ]
+	if px4io update
 	then
-		echo "PX4IO Firmware found. Checking Upgrade.."
-		if cmp /fs/microsd/px4io.bin /fs/microsd/px4io.cur
+		if [ -d /fs/microsd ]
 		then
-			echo "No newer version, skipping upgrade."
-		else
-			echo "Loading /fs/microsd/px4io.bin"
-			if px4io update /fs/microsd/px4io.bin > /fs/microsd/px4io.log
-			then
-				cp /fs/microsd/px4io.bin /fs/microsd/px4io.cur
-				echo "Flashed /fs/microsd/px4io.bin OK" >> /fs/microsd/px4io.log
-			else
-				echo "Failed flashing /fs/microsd/px4io.bin" >> /fs/microsd/px4io.log
-				echo "Failed to upgrade px4io firmware - check if px4io is in bootloader mode"
-			fi
+			echo "Flashed PX4IO Firmware OK" > /fs/microsd/px4io.log
 		fi
+
+		# Allow IO to safely kick back to app
+		usleep 200000
 	fi
 	
 	#