diff --git a/components/stm_pro_mode/include/stm_pro_mode.h b/components/stm_pro_mode/include/stm_pro_mode.h
index b250320..9913d29 100755
--- a/components/stm_pro_mode/include/stm_pro_mode.h
+++ b/components/stm_pro_mode/include/stm_pro_mode.h
@@ -46,7 +46,9 @@
 #define LOW 0
 
 #define ACK 0x79
-#define SERIAL_TIMEOUT 5000
+// You may needs to increase this delay, on some chip with bigger flash memory it may takes some time to erase
+// over 8s in my case.
+#define SERIAL_TIMEOUT 15000
 
 #define FILE_PATH_MAX 128
 #define BASE_PATH "/spiffs/"
diff --git a/components/stm_pro_mode/stm_pro_mode.c b/components/stm_pro_mode/stm_pro_mode.c
index 17edcfa..f345279 100755
--- a/components/stm_pro_mode/stm_pro_mode.c
+++ b/components/stm_pro_mode/stm_pro_mode.c
@@ -245,14 +245,21 @@ int waitForSerialData(int dataCount, int timeout)
 {
     int timer = 0;
     int length = 0;
-    while (timer < timeout)
+	
+	int ticks = pdMS_TO_TICKS(timeout);
+	// Minimum one ticks
+	if (ticks == 0)
+		ticks = 1;
+		
+    while (timer < ticks)
     {
         uart_get_buffered_data_len(UART_CONTROLLER, (size_t *)&length);
         if (length >= dataCount)
         {
             return length;
         }
-        vTaskDelay(1 / portTICK_PERIOD_MS);
+		
+        vTaskDelay(1);
         timer++;
     }
     return 0;
diff --git a/examples/file_serving_stm/sdkconfig.defaults b/examples/file_serving_stm/sdkconfig.defaults
index be87a17..4562b66 100644
--- a/examples/file_serving_stm/sdkconfig.defaults
+++ b/examples/file_serving_stm/sdkconfig.defaults
@@ -3,3 +3,5 @@ CONFIG_ESPTOOLPY_FLASHSIZE="4MB"
 CONFIG_PARTITION_TABLE_CUSTOM=y
 CONFIG_PARTITION_TABLE_CUSTOM_FILENAME="partitions_example.csv"
 CONFIG_PARTITION_TABLE_FILENAME="partitions_example.csv"
+
+CONFIG_HTTPD_MAX_REQ_HDR_LEN=1024
\ No newline at end of file