diff --git a/components/bt/esp_ble_mesh/v1.1/dfu/dfu_srv.c b/components/bt/esp_ble_mesh/v1.1/dfu/dfu_srv.c
index b36746a8220..2181ced2890 100644
--- a/components/bt/esp_ble_mesh/v1.1/dfu/dfu_srv.c
+++ b/components/bt/esp_ble_mesh/v1.1/dfu/dfu_srv.c
@@ -530,8 +530,13 @@ static void blob_end(struct bt_mesh_blob_srv *b, uint64_t id, bool success)
     BT_DBG("success: %u", success);
 
     if (!success) {
-        srv->update.phase = BLE_MESH_DFU_PHASE_TRANSFER_ERR;
+        /**
+         * Changed by Espressif,
+         * The xfer_failed must be executed before updating the state;
+         * otherwise, the end_cb inside xfer_failed will never be delivered.
+         */
         xfer_failed(srv);
+        srv->update.phase = BLE_MESH_DFU_PHASE_TRANSFER_ERR;
         return;
     }
 
diff --git a/components/bt/esp_ble_mesh/v1.1/mbt/blob_srv.c b/components/bt/esp_ble_mesh/v1.1/mbt/blob_srv.c
index dc61e14c09e..b0237f299f5 100644
--- a/components/bt/esp_ble_mesh/v1.1/mbt/blob_srv.c
+++ b/components/bt/esp_ble_mesh/v1.1/mbt/blob_srv.c
@@ -751,6 +751,11 @@ static int handle_chunk(struct bt_mesh_model *mod, struct bt_mesh_msg_ctx *ctx,
     chunk.data = net_buf_simple_pull_mem(buf, chunk.size);
     chunk.offset = idx * srv->state.xfer.chunk_size;
 
+    if (!bt_mesh_blob_srv_is_busy(srv)) {
+        BT_ERR("Discord chunk(%d), because the blob server is not busy(%d)", idx, srv->phase);
+        return -EINVAL;
+    }
+
     if (srv->phase == BT_MESH_BLOB_XFER_PHASE_WAITING_FOR_BLOCK ||
             srv->phase == BT_MESH_BLOB_XFER_PHASE_COMPLETE) {
         // This Block is already complete received.