diff --git a/tools/sdk/bin/bootloader.bin b/tools/sdk/bin/bootloader.bin
index 84fb15fa..d17c0cce 100644
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diff --git a/tools/sdk/include/app_update/esp_ota_ops.h b/tools/sdk/include/app_update/esp_ota_ops.h
index 846aa2b2..fe330776 100755
--- a/tools/sdk/include/app_update/esp_ota_ops.h
+++ b/tools/sdk/include/app_update/esp_ota_ops.h
@@ -73,11 +73,16 @@ esp_err_t esp_ota_write(esp_ota_handle_t handle, const void* data, size_t size);
 /**
  * @brief   Finish the update and validate written data
  *
- * @param   handle  Handle obtained from esp_ota_begin 
+ * @param   handle  Handle obtained from esp_ota_begin.
  *
- * @return: 
- *    - ESP_OK: if validate ota image pass
- *    - ESP_ERR_OTA_VALIDATE_FAILED: validate the ota image is invalid
+ * @note After calling esp_ota_end(), the handle is no longer valid and any memory associated with it is freed (regardless of result).
+ *
+ * @return:
+ *    - ESP_OK: Newly written OTA app image is valid.
+ *    - ESP_ERR_NOT_FOUND: OTA handle was not found.
+ *    - ESP_ERR_INVALID_ARG: Handle was never written to.
+ *    - ESP_ERR_OTA_VALIDATE_FAILED: OTA image is invalid (either not a valid app image, or - if secure boot is enabled - signature failed to verify.)
+ *    - ESP_ERR_INVALID_STATE: If flash encryption is enabled, this result indicates an internal error writing the final encrypted bytes to flash.
  */
 esp_err_t esp_ota_end(esp_ota_handle_t handle);
 
diff --git a/tools/sdk/include/bluedroid/blufi_int.h b/tools/sdk/include/bluedroid/blufi_int.h
index c21b41c4..c8b00234 100644
--- a/tools/sdk/include/bluedroid/blufi_int.h
+++ b/tools/sdk/include/bluedroid/blufi_int.h
@@ -33,6 +33,7 @@ typedef struct {
     BD_ADDR                 remote_bda;
     UINT32                  trans_id;
     UINT8                   congest;
+    UINT16                  frag_size;
 #define BLUFI_PREPAIR_BUF_MAX_SIZE 1024
     uint8_t                 *prepare_buf;
     int                     prepare_len;
@@ -160,7 +161,9 @@ typedef struct blufi_frag_hdr blufi_frag_hdr_t;
 #define BLUFI_FC_IS_REQ_ACK(fc)   ((fc) & BLUFI_FC_REQ_ACK_MASK) 
 #define BLUFI_FC_IS_FRAG(fc)      ((fc) & BLUFI_FC_FRAG_MASK) 
 
-#define BLUFI_FRAG_DATA_MAX_LEN  50
+/* BLUFI HEADER + TOTAL(REMAIN) LENGTH + CRC + L2CAP RESERVED */
+#define BLUFI_MTU_RESERVED_SIZE     (sizeof(struct blufi_hdr) + 2 + 2 + 3)
+#define BLUFI_FRAG_DATA_DEFAULT_LEN (GATT_DEF_BLE_MTU_SIZE - BLUFI_MTU_RESERVED_SIZE)
 
 //function declare
 void btc_blufi_protocol_handler(uint8_t type, uint8_t *data, int len);
diff --git a/tools/sdk/include/bluedroid/hci_packet_factory.h b/tools/sdk/include/bluedroid/hci_packet_factory.h
index 879962c2..11f0053a 100644
--- a/tools/sdk/include/bluedroid/hci_packet_factory.h
+++ b/tools/sdk/include/bluedroid/hci_packet_factory.h
@@ -40,6 +40,7 @@ typedef struct {
     BT_HDR *(*make_ble_read_local_supported_features)(void);
     BT_HDR *(*make_ble_read_resolving_list_size)(void);
     BT_HDR *(*make_ble_read_suggested_default_data_length)(void);
+    BT_HDR *(*make_ble_write_suggested_default_data_length)(uint16_t SuggestedMaxTxOctets, uint16_t SuggestedMaxTxTime);
     BT_HDR *(*make_ble_set_event_mask)(const bt_event_mask_t *event_mask);
 } hci_packet_factory_t;
 
diff --git a/tools/sdk/include/ethernet/esp_eth.h b/tools/sdk/include/ethernet/esp_eth.h
index e36c3ebf..c2a3554b 100644
--- a/tools/sdk/include/ethernet/esp_eth.h
+++ b/tools/sdk/include/ethernet/esp_eth.h
@@ -80,7 +80,7 @@ typedef void (*eth_phy_func)(void);
 typedef esp_err_t (*eth_tcpip_input_func)(void *buffer, uint16_t len, void *eb);
 typedef void (*eth_gpio_config_func)(void);
 typedef bool (*eth_phy_get_partner_pause_enable_func)(void);
-
+typedef void (*eth_phy_power_enable_func)(bool enable);
 
 /**
  * @brief ethernet configuration
@@ -98,6 +98,7 @@ typedef struct {
     eth_gpio_config_func gpio_config;           /*!< gpio config func  */
     bool flow_ctrl_enable;                      /*!< flag of flow ctrl enable */
     eth_phy_get_partner_pause_enable_func  phy_get_partner_pause_enable; /*!< get partner pause enable */
+    eth_phy_power_enable_func  phy_power_enable;  /*!< enable or disable phy power */
     
 } eth_config_t;
 
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