diff --git a/README.en.md b/README.en.md
index 426afd14abcf4bf6ad8b715d982ef1791e543e93..743efe46a50b3959b87704f405eb1efe28559c81 100644
--- a/README.en.md
+++ b/README.en.md
@@ -68,7 +68,7 @@ To achieve the distributed capabilities involved in this codelab, you need to ad
 ## Constraints
 
 1. This sample is only supported on Huawei phones running standard systems.
-2. The HarmonyOS version must be HarmonyOS 6.0.0 Release or later.
+2. The HarmonyOS version must be HarmonyOS 5.0.5 Release or later.
 3. The DevEco Studio version must be DevEco Studio 6.0.0 Release or later.
 4. The HarmonyOS SDK version must be HarmonyOS 6.0.0 Release SDK or later.
 5. Both devices must be logged in with the same HUAWEI ID. You are advised to enable Find Device.
diff --git a/README.md b/README.md
index 0afe08baaf8649b817edb0a05260e26a416bc714..49bef6e2507dfa647b05ce7931bfd9c1ba492f82 100644
--- a/README.md
+++ b/README.md
@@ -69,7 +69,7 @@
 ## 约束与限制
 
 1. 本示例仅支持标准系统上运行，支持设备：华为手机。
-2. HarmonyOS系统：HarmonyOS 6.0.0 Release及以上。
+2. HarmonyOS系统：HarmonyOS 5.0.5 Release及以上。
 3. DevEco Studio版本：DevEco Studio 6.0.0 Release及以上。
 4. HarmonyOS SDK版本：HarmonyOS 6.0.0 Release SDK及以上。
 5. 双端设备需要登录同一华为账号，建议打开查找设备功能。
diff --git a/build-profile.json5 b/build-profile.json5
index d9c3a7f0a417ab65316a9ebadd1a03ec6838420e..a931e872f2a43bc899af26f3c4f84f6e514f8cbd 100644
--- a/build-profile.json5
+++ b/build-profile.json5
@@ -5,8 +5,8 @@
       {
         "name": "default",
         "signingConfig": "default",
-        "compatibleSdkVersion": "6.0.0(20)",
         "targetSdkVersion": "6.0.0(20)",
+        "compatibleSdkVersion": "5.0.5(17)",
         "runtimeOS": "HarmonyOS"
       }
     ],