diff --git a/README.en.md b/README.en.md
index 69de5ad46e07311af885db48addd139ba03b1720..041185da6b14841cc9c709e7c263482f034baf38 100644
--- a/README.en.md
+++ b/README.en.md
@@ -71,7 +71,7 @@ effect is as follows.
 ## 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 3415b9993cae0a388c2824ae100ffce948aea6a0..fba2c557c313ab5c222ffd9d4f5164e523215690 100644
--- a/README.md
+++ b/README.md
@@ -52,7 +52,7 @@
 ## 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 164a59ddadecdbc38e4a6bdcb8b331f5820a1193..36a8069087b79201f8af6926d93806b07ff09780 100644
--- a/build-profile.json5
+++ b/build-profile.json5
@@ -6,7 +6,7 @@
         "name": "default",
         "signingConfig": "default",
         "targetSdkVersion": "6.0.0(20)",
-        "compatibleSdkVersion": "6.0.0(20)",
+        "compatibleSdkVersion": "5.0.5(17)",
         "runtimeOS": "HarmonyOS"
       }
     ]