diff --git a/project/ble_peripheral/ble_app_bladder_patch/main.h b/project/ble_peripheral/ble_app_bladder_patch/main.h
index 1fddf71..666211b 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/main.h
+++ b/project/ble_peripheral/ble_app_bladder_patch/main.h
@@ -41,12 +41,12 @@
 *   - VBTFW0113 260430 jhChun : Changed piezo MUX settling delay after channel selection from busy-wait to TIMER4-based wait.
 *   - VBTFW0114 260430 jhChun : Added delay time between averaged bursts to reduce residual echo carry-over.
 *   - VBTFW0115 260518 jhChun
-*      : Added mtb? command (reb:+raa:+rim:, 6ch piezo + ICM42670 FIFO at 25 Hz).
+*      : Added mtb? command (reb:+raa:+rim:, 6ch piezo + ICM42670 FIFO at 50 Hz).
 *      : rim: packet format and FIFO sample cap/filter options (app_raw).
 *   - VBTFW0116 260522 jhChun : Expanded BLE TX pending slots from 1 → 8 to reduce ADC data packet loss when the TX queue is full
 *   - VBTFW0117 260527 jhChun : Prevent battery/temperature safety checks from powering off piezo during MAA capture, and lock BLE PHY to 1M.
 ------------------------------------------------------------------------- */
-#define FIRMWARE_VERSION                "VBTFW0117"
+#define FIRMWARE_VERSION                "VBTFW0118"
 
 /*==============================================================================
  * Data Length Constants
diff --git a/project/ble_peripheral/ble_app_bladder_patch/measurement/imu/app_raw/app_raw.c b/project/ble_peripheral/ble_app_bladder_patch/measurement/imu/app_raw/app_raw.c
index 6382e79..359ae5d 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/measurement/imu/app_raw/app_raw.c
+++ b/project/ble_peripheral/ble_app_bladder_patch/measurement/imu/app_raw/app_raw.c
@@ -686,7 +686,7 @@ int imu_read_temperature_x100(uint16_t *temp_x100, float *temp_c)
 /* --------------------------------------------------------------------------------------
  * mtb? FIFO capture support
  *
- * Uses the ICM42670P internal FIFO at 25 Hz. The FIFO is started when mtb?
+ * Uses the ICM42670P internal FIFO at 50 Hz. The FIFO is started when mtb?
  * begins, then drained after piezo raa: completion and sent as rim: packets.
  * rim payload: u16 BE total_sample_count, then per sample accel(6B)+gyro(6B) from each 16B FIFO record.
  *
diff --git a/project/ble_peripheral/ble_app_bladder_patch/measurement/imu/app_raw/app_raw.h b/project/ble_peripheral/ble_app_bladder_patch/measurement/imu/app_raw/app_raw.h
index eacc80c..270139c 100644
--- a/project/ble_peripheral/ble_app_bladder_patch/measurement/imu/app_raw/app_raw.h
+++ b/project/ble_peripheral/ble_app_bladder_patch/measurement/imu/app_raw/app_raw.h
@@ -141,7 +141,7 @@ int imu_fifo_capture_stop_and_send_rim(void);
 /*
  * mtb? FIFO path — ICM42670 UI low-noise filter bandwidth (inv_imu_set_*_ln_bw).
  * Enum suffix is approximate -3dB BW in Hz; smaller => smoother, more phase lag.
- * Match to imu_fifo_capture_start() ODR (e.g. 25Hz → _16 or _25 typical).
+ * Match to imu_fifo_capture_start() ODR (50Hz in mtb? FIFO mode).
  */
 #ifndef IMU_FIFO_MTB_ACCEL_LN_BW
 #define IMU_FIFO_MTB_ACCEL_LN_BW ACCEL_CONFIG1_ACCEL_FILT_BW_16