diff --git a/tools/blisp/src/common.c b/tools/blisp/src/common.c
index 451c885..8a5ba54 100644
--- a/tools/blisp/src/common.c
+++ b/tools/blisp/src/common.c
@@ -42,15 +42,17 @@ blisp_return_t blisp_common_init_device(struct blisp_device* device,
   blisp_return_t ret;
   ret = blisp_device_init(device, chip);
   if (ret != BLISP_OK) {
-    fprintf(stderr, "Failed to init device.\n");
+    fprintf(stderr, "Failed to init device, ret: %d\n", ret);
     return ret;
   }
   ret = blisp_device_open(device,
                           port_name->count == 1 ? port_name->sval[0] : NULL);
   if (ret != BLISP_OK) {
-    fprintf(stderr, ret == BLISP_ERR_DEVICE_NOT_FOUND
-                        ? "Device not found\n"
-                        : "Failed to open device.\n");
+    if (ret == BLISP_ERR_DEVICE_NOT_FOUND) {
+      fprintf(stderr, "Device not found\n");
+    } else {
+      fprintf(stderr, "Failed to open device, ret: %d\n", ret);
+    }
     return ret;
   }
 
@@ -67,14 +69,14 @@ blisp_return_t blisp_common_prepare_flash(struct blisp_device* device) {
   printf("Sending a handshake...\n");
   ret = blisp_device_handshake(device, false);
   if (ret != BLISP_OK) {
-    fprintf(stderr, "Failed to handshake with device.\n");
+    fprintf(stderr, "Failed to handshake with device, ret: %d\n", ret);
     return ret;
   }
   printf("Handshake successful!\nGetting chip info...\n");
   struct blisp_boot_info boot_info;
   ret = blisp_device_get_boot_info(device, &boot_info);
   if (ret != BLISP_OK) {
-    fprintf(stderr, "Failed to get boot info.\n");
+    fprintf(stderr, "Failed to get boot info, ret: %d\n", ret);
     return ret;
   }
 
@@ -103,13 +105,13 @@ blisp_return_t blisp_common_prepare_flash(struct blisp_device* device) {
     printf("Setting clock parameters ...\n");
     ret = bl808_load_clock_para(device, true, device->current_baud_rate);
     if (ret != BLISP_OK) {
-      fprintf(stderr, "Failed to set clock parameters.\n");
+      fprintf(stderr, "Failed to set clock parameters, ret: %d\n", ret);
       return ret;
     }
     printf("Setting flash parameters...\n");
     ret = bl808_load_flash_para(device);
     if (ret != BLISP_OK) {
-      fprintf(stderr, "Failed to set flash parameters.\n");
+      fprintf(stderr, "Failed to set flash parameters, ret: %d\n", ret);
       return ret;
     }
   }
@@ -149,20 +151,20 @@ blisp_return_t blisp_common_prepare_flash(struct blisp_device* device) {
 
   ret = blisp_device_check_image(device);
   if (ret != 0) {
-    fprintf(stderr, "Failed to check image.\n");
+    fprintf(stderr, "Failed to check image, ret: %d\n", ret);
     goto exit1;
   }
 
   ret = blisp_device_run_image(device);
   if (ret != BLISP_OK) {
-    fprintf(stderr, "Failed to run image.\n");
+    fprintf(stderr, "Failed to run image, ret: %d\n", ret);
     goto exit1;
   }
 
   printf("Sending a handshake...\n");
   ret = blisp_device_handshake(device, true);
   if (ret != BLISP_OK) {
-    fprintf(stderr, "Failed to handshake with device.\n");
+    fprintf(stderr, "Failed to handshake with device, ret: %d\n", ret);
     goto exit1;
   }
   printf("Handshake with eflash_loader successful.\n");