diff --git a/project/ble_peripheral/ble_app_bladder_patch/fstorage.c b/project/ble_peripheral/ble_app_bladder_patch/fstorage.c
index b8d3786..8de8c11 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/fstorage.c
+++ b/project/ble_peripheral/ble_app_bladder_patch/fstorage.c
@@ -109,9 +109,9 @@ void fds_default_value_set(void)
 	memset(m_config.hw_no, 0, 12);
 	memcpy(m_config.hw_no, HARDWARE_VERSION, strlen(HARDWARE_VERSION));
 
-	/* Serial Number - default from FIRMWARE_SERIAL_NO */
+	/* Serial Number - default from SERIAL_NUMBER */
 	memset(m_config.serial_no, 0, 12);
-	memcpy(m_config.serial_no, FIRMWARE_SERIAL_NO, strlen(FIRMWARE_SERIAL_NO));
+	memcpy(m_config.serial_no, SERIAL_NUMBER, strlen(SERIAL_NUMBER));
 
 	/* Static Passkey */
 	memcpy(m_config.static_passkey, static_passkey_dflt, 6);
@@ -125,7 +125,7 @@ void fds_default_value_set(void)
 	/* Device usage count */
 	m_config.life_cycle  = 0;
 
-	/* 피에조 캡처 파라미터 기본값 */
+	/* 피에조 측정 파라미터 기본값 */
 	m_config.piezo_freq_option = 1;      /* 2.1MHz */
 	m_config.piezo_delay_us    = 10;     /* 버스트 후 10us */
 	m_config.piezo_num_samples = 100;    /* 100샘플 */
diff --git a/project/ble_peripheral/ble_app_bladder_patch/fstorage.h b/project/ble_peripheral/ble_app_bladder_patch/fstorage.h
index fe70c5b..4ce8fff 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/fstorage.h
+++ b/project/ble_peripheral/ble_app_bladder_patch/fstorage.h
@@ -52,8 +52,7 @@
 *   - VB026030001 = 양산용 26년 3월 생산 1번
 ------------------------------------------------------------------------- */
 #define HARDWARE_VERSION                "VBTHW0100"
-#define FIRMWARE_VERSION                "VBTFW0100"
-#define FIRMWARE_SERIAL_NO              "VBT26030001"
+#define SERIAL_NUMBER                   "VBT26030001"
 #define DEFAULT_PASSKEY                 "123456"
 
 #pragma pack(1)
diff --git a/project/ble_peripheral/ble_app_bladder_patch/main.c b/project/ble_peripheral/ble_app_bladder_patch/main.c
index 5a7b6eb..6374951 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/main.c
+++ b/project/ble_peripheral/ble_app_bladder_patch/main.c
@@ -355,7 +355,7 @@ static void gpio_init(void)
 static void load_default_config(void)
 {
     memset(SERIAL_NO, 0, SERIAL_NO_LENGTH);
-    memcpy(SERIAL_NO, FIRMWARE_SERIAL_NO, strlen(FIRMWARE_SERIAL_NO));
+    memcpy(SERIAL_NO, SERIAL_NUMBER, strlen(SERIAL_NUMBER));
 
     memset(m_static_passkey, 0, PASSKEY_LENGTH);
     memcpy(m_static_passkey, "123456", PASSKEY_LENGTH);
@@ -392,8 +392,8 @@ static void load_flash_config(void)
     if (m_config.serial_no[0] == 0 || m_config.serial_no[0] == (char)0xFF)
     {
         memset(m_config.serial_no, 0, SERIAL_NO_LENGTH);
-        memcpy(m_config.serial_no, FIRMWARE_SERIAL_NO, strlen(FIRMWARE_SERIAL_NO));
-        DBG_PRINTF("[CFG] S/N empty, set default: %s\r\n", FIRMWARE_SERIAL_NO);
+        memcpy(m_config.serial_no, SERIAL_NUMBER, strlen(SERIAL_NUMBER));
+        DBG_PRINTF("[CFG] S/N empty, set default: %s\r\n", SERIAL_NUMBER);
         m_need_save_defaults = true;
     }
 
diff --git a/project/ble_peripheral/ble_app_bladder_patch/main.h b/project/ble_peripheral/ble_app_bladder_patch/main.h
index 898fbc4..50d95c7 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/main.h
+++ b/project/ble_peripheral/ble_app_bladder_patch/main.h
@@ -23,6 +23,13 @@
 #ifndef MAIN_H__
 #define MAIN_H__
 
+/* -------------------------------------------------------------------------
+* Firmware 식별 코드
+*   - VBTFW0100 = 개발(시험)용 Ver 1.00
+*   - VB0FW0100 = 양산용 Ver 1.00
+------------------------------------------------------------------------- */
+#define FIRMWARE_VERSION                "VBTFW0100"
+
 /*==============================================================================
  * 데이터 길이 상수
  *============================================================================*/