diff --git a/app/build.gradle b/app/build.gradle
index 35ab697..6fdc9fc 100755
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -6,8 +6,8 @@ android {
         applicationId "com.csl.cs108ademoapp"
         minSdkVersion 19
         targetSdkVersion 26
-        versionCode 19
-        versionName "1.14.0"
+        versionCode 20
+        versionName "1.15.0"
     }
     compileOptions {
         sourceCompatibility JavaVersion.VERSION_1_7
diff --git a/app/libs/cs108library4a-debug.aar b/app/libs/cs108library4a-debug.aar
deleted file mode 100755
index 7c15cc5..0000000
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diff --git a/app/libs/cs108library4a-release.aar b/app/libs/cs108library4a-release.aar
deleted file mode 100755
index 79f4daa..0000000
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diff --git a/app/release/cs108ademo-190116-v1.13.1-app-release.apk b/app/release/cs108ademo-190116-v1.13.1-app-release.apk
deleted file mode 100755
index d914bc4..0000000
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diff --git a/app/release/cs108ademo-190116-v1.13.1-app-release.zip b/app/release/cs108ademo-190116-v1.13.1-app-release.zip
deleted file mode 100755
index 8e134b8..0000000
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diff --git a/app/release/cs108ademo-190117-v1.13.2-app-release.apk b/app/release/cs108ademo-190117-v1.13.2-app-release.apk
deleted file mode 100755
index cf1f04d..0000000
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diff --git a/app/release/cs108ademo-190117-v1.13.2-app-release.zip b/app/release/cs108ademo-190117-v1.13.2-app-release.zip
deleted file mode 100755
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diff --git a/app/release/cs108ademo-190118-v1.13.3-app-release.zip b/app/release/cs108ademo-190118-v1.13.3-app-release.zip
deleted file mode 100755
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diff --git a/app/release/cs108ademo-190122-v1.13.4-app-release.apk b/app/release/cs108ademo-190122-v1.13.4-app-release.apk
deleted file mode 100755
index 2825c9e..0000000
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diff --git a/app/release/cs108ademo-190122-v1.13.4-app-release.zip b/app/release/cs108ademo-190122-v1.13.4-app-release.zip
deleted file mode 100755
index f671c6b..0000000
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diff --git a/app/release/cs108ademo-190124-v1.13.5-app-release.apk b/app/release/cs108ademo-190124-v1.13.5-app-release.apk
deleted file mode 100755
index d6b3489..0000000
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deleted file mode 100755
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diff --git a/app/release/cs108ademo-190124-v1.13.6-app-release.apk b/app/release/cs108ademo-190124-v1.13.6-app-release.apk
deleted file mode 100755
index 79aea29..0000000
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diff --git a/app/release/cs108ademo-190124-v1.13.6-app-release.zip b/app/release/cs108ademo-190124-v1.13.6-app-release.zip
deleted file mode 100755
index 1f046ac..0000000
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diff --git a/app/release/cs108ademo-190125-v1.13.7-app-release.zip b/app/release/cs108ademo-190125-v1.13.7-app-release.zip
deleted file mode 100755
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diff --git a/app/release/cs108ademo-190214-v1.13.7A-app-release.apk b/app/release/cs108ademo-190214-v1.13.7A-app-release.apk
deleted file mode 100755
index ce3e6aa..0000000
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deleted file mode 100755
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diff --git a/app/release/cs108ademo-190215-v1.13.8-app-release.zip b/app/release/cs108ademo-190215-v1.13.8-app-release.zip
deleted file mode 100755
index f41aa81..0000000
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diff --git a/app/release/cs108ademo-190215-v1.13.8-app-release.apk b/app/release/cs108ademo-190220A-v1.14.0A-app-release.apk
similarity index 63%
rename from app/release/cs108ademo-190215-v1.13.8-app-release.apk
rename to app/release/cs108ademo-190220A-v1.14.0A-app-release.apk
index abdd720..4cb52e6 100755
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diff --git a/app/release/cs108ademo-190220A-v1.14.0A-app-release.zip b/app/release/cs108ademo-190220A-v1.14.0A-app-release.zip
new file mode 100755
index 0000000..1fc1a48
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diff --git a/app/release/cs108ademo-190125-v1.13.7-app-release.apk b/app/release/cs108ademo-190221-v1.14.1-app-release.apk
similarity index 58%
rename from app/release/cs108ademo-190125-v1.13.7-app-release.apk
rename to app/release/cs108ademo-190221-v1.14.1-app-release.apk
index 0e11de9..5691a1a 100755
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diff --git a/app/release/cs108ademo-190221-v1.14.1-app-release.zip b/app/release/cs108ademo-190221-v1.14.1-app-release.zip
new file mode 100755
index 0000000..d35665a
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diff --git a/app/release/cs108ademo-190118-v1.13.3-app-release.apk b/app/release/cs108ademo-190221-v1.15.0-app-release.apk
similarity index 58%
rename from app/release/cs108ademo-190118-v1.13.3-app-release.apk
rename to app/release/cs108ademo-190221-v1.15.0-app-release.apk
index c948546..3ed7efd 100755
Binary files a/app/release/cs108ademo-190118-v1.13.3-app-release.apk and b/app/release/cs108ademo-190221-v1.15.0-app-release.apk differ
diff --git a/app/release/cs108ademo-190221-v1.15.0-app-release.zip b/app/release/cs108ademo-190221-v1.15.0-app-release.zip
new file mode 100755
index 0000000..5718441
Binary files /dev/null and b/app/release/cs108ademo-190221-v1.15.0-app-release.zip differ
diff --git a/app/release/output.json b/app/release/output.json
index ee83254..8d76adf 100755
--- a/app/release/output.json
+++ b/app/release/output.json
@@ -1 +1 @@
-[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":19,"versionName":"1.14.0","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]
\ No newline at end of file
+[{"outputType":{"type":"APK"},"apkInfo":{"type":"MAIN","splits":[],"versionCode":20,"versionName":"1.15.0","enabled":true,"outputFile":"app-release.apk","fullName":"release","baseName":"release"},"path":"app-release.apk","properties":{}}]
\ No newline at end of file
diff --git a/app/src/main/java/com/csl/cs108ademoapp/fragments/SettingAdminFragment.java b/app/src/main/java/com/csl/cs108ademoapp/fragments/SettingAdminFragment.java
index 57e1108..faf3363 100755
--- a/app/src/main/java/com/csl/cs108ademoapp/fragments/SettingAdminFragment.java
+++ b/app/src/main/java/com/csl/cs108ademoapp/fragments/SettingAdminFragment.java
@@ -131,7 +131,8 @@ public void onActivityCreated(Bundle savedInstanceState) {
         buttonCSLServer.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                String serverLocation = "https://" + "www.convergence.com.hk:" + "29090/WebServiceRESTs/1.0/req/" + "create-update-delete/update-entity/" + "tagdata";
+                String serverLocation = "https://" + "democloud.convergence.com.hk:" + "29090/WebServiceRESTs/1.0/req/" + "create-update-delete/update-entity/" + "tagdata";
+                //String serverLocation = "https://" + "www.convergence.com.hk:" + "29090/WebServiceRESTs/1.0/req/" + "create-update-delete/update-entity/" + "tagdata";
                 //String serverLocation = "http://ptsv2.com/t/10i1t-1519143332/post";
                 editTextServer.setText(serverLocation);
             }
diff --git a/cs108library4a/build.gradle b/cs108library4a/build.gradle
index 97a7163..54667d9 100755
--- a/cs108library4a/build.gradle
+++ b/cs108library4a/build.gradle
@@ -5,8 +5,8 @@ android {
     defaultConfig {
         minSdkVersion 19
         targetSdkVersion 26
-        versionCode 19
-        versionName "1.14.0"
+        versionCode 20
+        versionName "1.15.0"
 
         testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
 
diff --git a/cs108library4a/src/main/java/com/csl/cs108library4a/Cs108Connector.java b/cs108library4a/src/main/java/com/csl/cs108library4a/Cs108Connector.java
index e2f1388..83a5617 100755
--- a/cs108library4a/src/main/java/com/csl/cs108library4a/Cs108Connector.java
+++ b/cs108library4a/src/main/java/com/csl/cs108library4a/Cs108Connector.java
@@ -4339,7 +4339,7 @@ void mRx000UplinkHandler() {
                     while (mRfidToReadingOffset > startIndex) {
                         int packageLengthRead = 0;
                         if (mRfidToReadingOffset - startIndex >= 8) {
-                            packageLengthRead = mRfidToReading[startIndex + 5] * 256 + mRfidToReading[startIndex + 4];
+                            packageLengthRead = (mRfidToReading[startIndex + 5] & 0xFF) * 256 + (mRfidToReading[startIndex + 4] & 0xFF);
                         }
                         int expectedLength = 8 + packageLengthRead * 4;
                         if (mRfidToReading[startIndex + 0] == 0x04) expectedLength = 8 + packageLengthRead;