diff --git a/esp3d/src/core/hal.cpp b/esp3d/src/core/hal.cpp
index b8ebbc74..2884811e 100644
--- a/esp3d/src/core/hal.cpp
+++ b/esp3d/src/core/hal.cpp
@@ -24,6 +24,8 @@
 #include "ESP8266WiFi.h"
 #endif //ARDUINO_ARCH_ESP8266
 #if defined(ARDUINO_ARCH_ESP32)
+#include <soc/soc.h>
+#include <soc/rtc_cntl_reg.h>
 #include "WiFi.h"
 #ifdef __cplusplus
 extern "C" {
@@ -183,6 +185,10 @@ void Hal::analogWriteRange(uint32_t range)
 //Setup
 bool Hal::begin()
 {
+#if defined(ARDUINO_ARCH_ESP32) && defined(CAMERA_DEVICE)
+    log_esp3d("Disable brown out");
+    WRITE_PERI_REG(RTC_CNTL_BROWN_OUT_REG, 0); //disable brownout detector
+#endif //ARDUINO_ARCH_ESP32 && CAMERA_DEVICE
     //Clear all wifi state
     WiFi.persistent(false);
     WiFi.disconnect(true);
diff --git a/esp3d/src/include/version.h b/esp3d/src/include/version.h
index 99caef9b..0b9036a0 100644
--- a/esp3d/src/include/version.h
+++ b/esp3d/src/include/version.h
@@ -22,7 +22,7 @@
 #define _VERSION_ESP3D_H
 
 //version and sources location
-#define FW_VERSION "3.0.0.a52"
+#define FW_VERSION "3.0.0.a53"
 #define REPOSITORY "https://github.com/luc-github/ESP3D/tree/3.0"
 
 #endif //_VERSION_ESP3D_H
diff --git a/esp3d/src/modules/camera/camera.cpp b/esp3d/src/modules/camera/camera.cpp
index 85ff82a3..6832d9ed 100644
--- a/esp3d/src/modules/camera/camera.cpp
+++ b/esp3d/src/modules/camera/camera.cpp
@@ -28,7 +28,7 @@
 #include "esp_http_server.h"
 #include <esp_camera.h>
 #include "fd_forward.h"
-//#include <soc/soc.h> //not sure this one is needed
+#include <soc/soc.h> //not sure this one is needed
 #include <soc/rtc_cntl_reg.h>
 #include <driver/i2c.h>
 
diff --git a/esp3d/src/modules/filesystem/sd/sdio_esp32.cpp b/esp3d/src/modules/filesystem/sd/sdio_esp32.cpp
index 1b1f6f97..54ab8f18 100644
--- a/esp3d/src/modules/filesystem/sd/sdio_esp32.cpp
+++ b/esp3d/src/modules/filesystem/sd/sdio_esp32.cpp
@@ -148,10 +148,12 @@ ESP_SDFile ESP_SD::open(const char* path, uint8_t mode)
 {
     //do some check
     if(((strcmp(path,"/") == 0) && ((mode == ESP_FILE_WRITE) || (mode == ESP_FILE_APPEND))) || (strlen(path) == 0)) {
+        log_esp3d("File open check : failed");
         return ESP_SDFile();
     }
     // path must start by '/'
     if (path[0] != '/') {
+        log_esp3d("File open path is invalid");
         return ESP_SDFile();
     }
     if (mode != ESP_FILE_READ) {
@@ -159,7 +161,7 @@ ESP_SDFile ESP_SD::open(const char* path, uint8_t mode)
         String p = path;
         p.remove(p.lastIndexOf('/') +1);
         if (!exists(p.c_str())) {
-            log_esp3d("Error opening: %s", path);
+            log_esp3d("Error opening: %s, %s does not exists", path,p.c_str());
             return ESP_SDFile();
         }
     }
@@ -171,13 +173,18 @@ ESP_SDFile ESP_SD::open(const char* path, uint8_t mode)
 bool ESP_SD::exists(const char* path)
 {
     bool res = false;
+    String p = path;
     //root should always be there if started
-    if (strcmp(path, "/") == 0) {
+    if (p == "/")  {
         return _started;
     }
-    res = SD_MMC.exists(path);
+
+    if (p.endsWith("/")) {
+        p.remove( p.length() - 1,1);
+    }
+    res = SD_MMC.exists(p);
     if (!res) {
-        ESP_SDFile root = ESP_SD::open(path, ESP_FILE_READ);
+        ESP_SDFile root = ESP_SD::open(p.c_str(), ESP_FILE_READ);
         if (root) {
             res = root.isDirectory();
         }
diff --git a/esp3d/src/modules/sensor/dht.cpp b/esp3d/src/modules/sensor/dht.cpp
index a3d76557..35748bd4 100644
--- a/esp3d/src/modules/sensor/dht.cpp
+++ b/esp3d/src/modules/sensor/dht.cpp
@@ -135,7 +135,7 @@ const char * DHTSensorDevice::GetData()
         if ( String(humidity,1)!="nan") {
             s= String(temperature,1);
             s+= "[";
-            s+= SENSOR__UNIT+
+            s+= SENSOR__UNIT;
             s+="] " + String(humidity,1) + "[%]";
         } else {
             s="DISCONNECTED";