diff --git a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/mem_board_central.h b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/mem_board_central.h
index ba0729f7d..ad45a57a6 100644
--- a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/mem_board_central.h
+++ b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/mem_board_central.h
@@ -26,15 +26,7 @@ static void MemBoard_init(void){
 //    mem_UART_display(txBuf);
 }
 
-/*!
- * main function
- */
-static void mem_central_event() {
-    if (flag_mask(EVT_NEU_SPI)) {
-        flag_disable(EVT_MEM_LED);
-        SetMemOutputPIN(Board_GLED, 1);
-    }
-}
+static void mem_central_event();
 
 static EventTableEntry EVENT_TABLE[] = {  //
     {EVT_ALL, &mem_central_event},
@@ -53,9 +45,27 @@ static void mem_event_handle() {
             entry->event_callback();
         }
     }
+}
 
-    // remove system one-shot flag
-    flag_disable(0xF0000000);
+typedef enum{
+    LED_OFF,
+    LED_ON
+} LEDStatus;
+
+static LEDStatus GLEDStatus = LED_OFF;
+
+static void mem_central_event() {
+    if (flag_mask(EVT_NEU_SPI)) {
+        flag_disable(EVT_MEM_LED);
+        GLEDStatus = LED_ON;
+        SetMemOutputPIN(Board_GLED, 1);
+    }
+
+    if(flag_mask(EVT_NEU_SPI_OFF)){
+        flag_disable(EVT_MEM_LED_OFF);
+        GLEDStatus = LED_OFF;
+        SetMemOutputPIN(Board_GLED, 0);
+    }
 }
 
 
diff --git a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/mem_event.h b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/mem_event.h
index c6e81b9a9..50533b6c0 100644
--- a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/mem_event.h
+++ b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/mem_event.h
@@ -42,6 +42,7 @@
 #define EVT_ALL                 0xFFFF
 #define EVT_MEM_LED             0x0001  /**< set led event */
 #define EVT_MEM_UART            0x0002  /**< UART transaction event */
+#define EVT_MEM_LED_OFF         0x0004
 
 uint16_t EventMask = 0;
 
diff --git a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/simple_central.c b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/simple_central.c
index 3ee4d7936..a50353b6c 100644
--- a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/simple_central.c
+++ b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_central/cc26xx/app/simple_central.c
@@ -631,7 +631,7 @@ static void SimpleBLECentral_taskFxn(UArg a0, UArg a1)
     }
 
     if(EventMask > 0){
-
+        mem_event_handle();
     }
 
   }
@@ -964,7 +964,12 @@ static void SimpleBLECentral_handleKeys(uint8_t shift, uint8_t keys)
 		case BLE_STATE_IDLE:
 		    if(keys & KEY_UART_EN)
 		    {
-                flag_notify(EVT_MEM_LED);
+                if(GLEDStatus == LED_OFF){
+                    flag_notify(EVT_MEM_LED);
+                }
+                else{
+                    flag_notify(EVT_MEM_LED_OFF);
+                }
 		    }
 
 			if (keys & KEY_RIGHT)
diff --git a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/headstage_version.h b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/headstage_version.h
index c74e3d80b..5c300f448 100644
--- a/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/headstage_version.h
+++ b/simplelink/ble_sdk_2_02_02_25/src/examples/simple_peripheral/cc26xx/app/headstage/headstage_version.h
@@ -5,12 +5,12 @@
 #define VERSION_DATE_YEAR      20
 #define VERSION_DATE_MONTH     5
 #define VERSION_DATE_DAY       15
-#define VERSION_DATE_HOUR      11
-#define VERSION_DATE_MINUTE    48
+#define VERSION_DATE_HOUR      12
+#define VERSION_DATE_MINUTE    10
 
 // this is NOT the version hash !!
 // it's the last version hash
-#define VERSION_HASH           47054d91c873419db2e6d334e90d633ac9fd499a
+#define VERSION_HASH           08a71366f7dd7be3bbc7a024cb9911ac2efed599
 #define VERSION_GIT_BRANCH     MemBoard_simple_central
 
 #endif