diff --git a/README.md b/README.md
index ce7ed0df..c5ba76d9 100644
--- a/README.md
+++ b/README.md
@@ -138,13 +138,6 @@ cd examples/helloworld
 make ninja CHIP=bl616 BOARD=bl616dk
 ```
 
-```
-cd bl_mcu_sdk
-chmod +x tools/cmake/bin/cmake
-cd examples/helloworld
-make CHIP=bl808 BOARD=bl808dk CPU_ID=m0
-```
-
 ## CDK Development
 
 TODO
diff --git a/README_zh.md b/README_zh.md
index 829f42a9..60a5cdb7 100644
--- a/README_zh.md
+++ b/README_zh.md
@@ -142,7 +142,7 @@ make CHIP=bl808 BOARD=bl808dk CPU_ID=m0
 cd bl_mcu_sdk
 chmod +x tools/cmake/bin/cmake
 cd examples/helloworld
-make ninja CHIP=bl808 BOARD=bl808dk CPU_ID=m0
+make ninja CHIP=bl616 BOARD=bl616dk
 ```
 
 ## CDK 编译