diff --git a/tools/updateW5500Code.sh b/tools/updateW5500Code.sh
new file mode 100644
index 0000000..9d68014
--- /dev/null
+++ b/tools/updateW5500Code.sh
@@ -0,0 +1,9 @@
+#!/bin/bash
+
+rm w5500/*
+pushd ioLibrary_Driver  
+for D in Ethernet Ethernet/W5500 Internet/DHCP Internet/DNS Internet/httpServer Internet/MQTT; do
+  cp $D/*.c $D/.h ../w5500
+done
+popd
+