diff --git a/baselib/src/main/java/com/utsmyanmar/baselib/TerminalKeyUtil.java b/baselib/src/main/java/com/utsmyanmar/baselib/TerminalKeyUtil.java
index d405eac..942b6a1 100644
--- a/baselib/src/main/java/com/utsmyanmar/baselib/TerminalKeyUtil.java
+++ b/baselib/src/main/java/com/utsmyanmar/baselib/TerminalKeyUtil.java
@@ -22,7 +22,7 @@ public final class TerminalKeyUtil {
 
     public static final String TAG = TerminalKeyUtil.class.getSimpleName();
 
-    private static final byte[] main_key_data = ByteUtil.hexStr2Bytes("875f63741753d18811a3449090d1777b".toUpperCase()); // KBZ UAT
+    private static final byte[] main_key_data = ByteUtil.hexStr2Bytes("B4D74774CC846CAFF6D1AAAC2EB79CFF".toUpperCase()); // KBZ UAT
 //    private static final byte[] main_key_usd_data = ByteUtil.hexStr2Bytes("3f4bcac6cc559ab12bbbc5a51118f3f5".toUpperCase()); // KBZ UAT
 //    private static final byte[] main_key_data = ByteUtil.hexStr2Bytes("875f63741753d18811a3449090d1777b".toUpperCase());
 //    private static final byte[] main_key_data = ByteUtil.hexStr2Bytes("e121249099a677e8b7d4f6a9d49fe8d1".toUpperCase()); // MPU