diff --git a/hardware/dev-tools/readme.md b/hardware/dev-tools/readme.md
index c746508..9d56f9b 100644
--- a/hardware/dev-tools/readme.md
+++ b/hardware/dev-tools/readme.md
@@ -1,7 +1,9 @@
-# New devtool(Green = Environmental protection, Earth is our home.)
+# DEV tool RC version.
+Coming Soon
 
+# DEV tool Beta version.
 <img src="https://github.com/RfidResearchGroup/ChameleonUltra/blob/main/resource/picture/devtool1.jpg" width = "600" height = "300" alt=""/> <img src="https://github.com/RfidResearchGroup/ChameleonUltra/blob/main/resource/picture/devtool2.jpg" width = "200" height = "300" alt=""/>
 
-# Old devtool(NRF52832 NFC Emulator, No one wants this, right?)
+# DEV tool Alpha version.
 
 <img src="https://github.com/RfidResearchGroup/ChameleonUltra/blob/main/resource/picture/yaxilalei.jpg" width = "200" height = "300" alt=""/>