diff --git a/hardware/dev-tools/readme.md b/hardware/dev-tools/readme.md
index 9d56f9b..d7f21eb 100644
--- a/hardware/dev-tools/readme.md
+++ b/hardware/dev-tools/readme.md
@@ -1,9 +1,8 @@
 # DEV tool RC version.
-Coming Soon
+<img src="https://github.com/RfidResearchGroup/ChameleonUltra/blob/main/resource/picture/devtool3.jpg" width = "200" height = "300" alt=""/>
 
 # 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=""/>
 
 # DEV tool Alpha version.
-
 <img src="https://github.com/RfidResearchGroup/ChameleonUltra/blob/main/resource/picture/yaxilalei.jpg" width = "200" height = "300" alt=""/>
diff --git a/resource/picture/devtool3.jpg b/resource/picture/devtool3.jpg
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index 0000000..b9922b8
Binary files /dev/null and b/resource/picture/devtool3.jpg differ