diff --git a/README.md b/README.md
index ecddf89..6771fe5 100644
--- a/README.md
+++ b/README.md
@@ -2,11 +2,11 @@
 
 ![GitHub Actions Workflow Status](https://img.shields.io/github/actions/workflow/status/mobizt/FirebaseClient/.github%2Fworkflows%2Fcompile_library.yml?logo=github&label=compile) [![Github Stars](https://img.shields.io/github/stars/mobizt/FirebaseClient?logo=github)](https://github.com/mobizt/FirebaseClient/stargazers) ![Github Issues](https://img.shields.io/github/issues/mobizt/FirebaseClient?logo=github)
 
-![GitHub Release](https://img.shields.io/github/v/release/mobizt/FirebaseClient) ![Arduino](https://img.shields.io/badge/Arduino-v1.3.8-57C207?logo=arduino) ![PlatformIO](https://badges.registry.platformio.org/packages/mobizt/library/FirebaseClient.svg) ![GitHub Release Date](https://img.shields.io/github/release-date/mobizt/FirebaseClient)
+![GitHub Release](https://img.shields.io/github/v/release/mobizt/FirebaseClient) ![Arduino](https://img.shields.io/badge/Arduino-v1.3.9-57C207?logo=arduino) ![PlatformIO](https://badges.registry.platformio.org/packages/mobizt/library/FirebaseClient.svg) ![GitHub Release Date](https://img.shields.io/github/release-date/mobizt/FirebaseClient)
 
 [![GitHub Sponsors](https://img.shields.io/github/sponsors/mobizt?logo=github)](https://github.com/sponsors/mobizt)
 
-Revision `2024-07-27T09:57:58Z`
+Revision `2024-07-30T02:59:34Z`
 
 ## Table of Contents
 
@@ -336,6 +336,8 @@ board_build.filesystem_size = 1m
 
 See this Arduino-Pico SDK [documentation](https://arduino-pico.readthedocs.io/en/latest/) for more information.
 
+> [!NOTE]  
+> You cannot install Arduino IDE and Arduino library in Microsoft's `OneDrive` folder because the `OneDrive` folder is the sandbox or virtual folder instead of real folder which causes the path error when compilation.
 
 ## Usages
 
diff --git a/library.json b/library.json
index 385986e..cdb2917 100644
--- a/library.json
+++ b/library.json
@@ -1,6 +1,6 @@
 {
   "name": "FirebaseClient",
-  "version": "1.3.8",
+  "version": "1.3.9",
   "keywords": "communication, REST, esp32, esp8266, arduino",
   "description": "Async Firebase Client library for Arduino.",
   "repository": {
diff --git a/library.properties b/library.properties
index 65aa4c6..0fb1465 100644
--- a/library.properties
+++ b/library.properties
@@ -1,6 +1,6 @@
 name=FirebaseClient
 
-version=1.3.8
+version=1.3.9
 
 author=Mobizt
 
diff --git a/src/cloud_storage/CloudStorage.h b/src/cloud_storage/CloudStorage.h
index 1b88234..ef92e17 100644
--- a/src/cloud_storage/CloudStorage.h
+++ b/src/cloud_storage/CloudStorage.h
@@ -1,5 +1,5 @@
 /**
- * Created July 27, 2024
+ * Created July 30, 2024
  *
  * The MIT License (MIT)
  * Copyright (c) 2024 K. Suwatchai (Mobizt)
@@ -466,16 +466,15 @@ class CloudStorage
             options.extras += uut.encode(parent.getObject());
 
             size_t sz = 0;
-
+#if defined(ENABLE_FS)
             if (file && file->cb && file->filename.length())
             {
-#if defined(ENABLE_FS)
                 file->cb(file->file, file->filename.c_str(), file_mode_open_read);
                 sz = file->file.size();
                 file->file.close();
-#endif
             }
-            else if (file && file->data_size)
+#endif
+            if (file && file->data_size)
                 sz = file->data_size;
 
             options.extras += "&uploadType=";
@@ -571,7 +570,6 @@ class CloudStorage
 
             if (request.options->payload.length())
             {
-#if defined(ENABLE_FS)
                 if (request.options->extras.indexOf("uploadType=resumable") > -1)
                 {
                     sData->request.val[req_hndlr_ns::payload] = request.options->payload;
@@ -585,7 +583,6 @@ class CloudStorage
                     sData->request.file_data.resumable.setSize(sData->request.file_data.file_size ? sData->request.file_data.file_size : sData->request.file_data.data_size);
                     sData->request.file_data.resumable.updateRange();
                 }
-#endif
             }
             else
             {
diff --git a/src/core/AsyncClient/AsyncClient.h b/src/core/AsyncClient/AsyncClient.h
index 286c78d..0163349 100644
--- a/src/core/AsyncClient/AsyncClient.h
+++ b/src/core/AsyncClient/AsyncClient.h
@@ -280,8 +280,6 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
     {
         function_return_type ret = function_return_type_continue;
 
-#if defined(ENABLE_FS)
-
         size_t totalLen = sData->request.file_data.file_size;
         bool fileopen = sData->request.payloadIndex == 0;
 
@@ -290,6 +288,7 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
 
         if (fileopen)
         {
+#if defined(ENABLE_FS)
             if (sData->request.file_data.filename.length() > 0)
             {
                 if (sData->request.file_data.file_status == file_config_data::file_status_closed)
@@ -302,7 +301,7 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
                     }
                 }
             }
-
+#endif
             if (sData->request.base64)
             {
                 ret = send(sData, reinterpret_cast<const uint8_t *>("\""), 1, totalLen, async_state_send_payload);
@@ -313,25 +312,32 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
 
         uint8_t *buf = nullptr;
         int toSend = 0;
+#if defined(ENABLE_FS)
         if (sData->request.file_data.filename.length() > 0 ? sData->request.file_data.file.available() : sData->request.file_data.data_pos < sData->request.file_data.data_size)
+#else
+        if (sData->request.file_data.data_pos < sData->request.file_data.data_size)
+#endif
         {
             if (sData->request.base64)
             {
 
                 toSend = FIREBASE_BASE64_CHUNK_SIZE;
 
+#if defined(ENABLE_FS)
                 if (sData->request.file_data.filename.length() > 0)
                 {
                     if (sData->request.file_data.file.available() < toSend)
                         toSend = sData->request.file_data.file.available();
                 }
-                else
+#endif
+                if (sData->request.file_data.data && sData->request.file_data.data_size)
                 {
                     if ((int)(sData->request.file_data.data_size - sData->request.file_data.data_pos) < toSend)
                         toSend = sData->request.file_data.data_size - sData->request.file_data.data_pos;
                 }
 
                 buf = reinterpret_cast<uint8_t *>(mem.alloc(toSend));
+#if defined(ENABLE_FS)
                 if (sData->request.file_data.filename.length() > 0)
                 {
                     toSend = sData->request.file_data.file.read(buf, toSend);
@@ -343,7 +349,8 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
                         goto exit;
                     }
                 }
-                else if (sData->request.file_data.data)
+#endif
+                if (sData->request.file_data.data && sData->request.file_data.data_size)
                 {
                     memcpy(buf, sData->request.file_data.data + sData->request.file_data.data_pos, toSend);
                     sData->request.file_data.data_pos += toSend;
@@ -365,6 +372,7 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
 
                 buf = reinterpret_cast<uint8_t *>(mem.alloc(toSend));
 
+#if defined(ENABLE_FS)
                 if (sData->request.file_data.filename.length() > 0)
                 {
                     toSend = sData->request.file_data.file.read(buf, toSend);
@@ -376,7 +384,8 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
                         goto exit;
                     }
                 }
-                else if (sData->request.file_data.data)
+#endif
+                if (sData->request.file_data.data && sData->request.file_data.data_size)
                 {
                     memcpy(buf, sData->request.file_data.data + sData->request.file_data.data_pos, toSend);
                 }
@@ -393,7 +402,6 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
 
         if (buf)
             mem.release(&buf);
-#endif
 
         return ret;
     }
@@ -419,19 +427,17 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
                 sData->request.dataIndex += toSend;
                 sData->request.payloadIndex += toSend;
 
-#if defined(ENABLE_FS)
                 if (sData->upload && sData->upload_progress_enabled && sData->request.file_data.file_size)
                 {
                     sData->aResult.upload_data.total = sData->request.file_data.file_size > size ? sData->request.file_data.file_size : size;
                     sData->aResult.upload_data.uploaded = sData->request.payloadIndex;
                     returnResult(sData, false);
                 }
-#endif
 
                 if (sData->request.dataIndex == len)
                     sData->request.dataIndex = 0;
 
-#if defined(ENABLE_FS) && defined(ENABLE_CLOUD_STORAGE)
+#if defined(ENABLE_CLOUD_STORAGE)
 
                 if (sData->request.file_data.resumable.isEnabled() && sData->request.file_data.resumable.isUpload())
                 {
@@ -489,7 +495,7 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
             else if (state == async_state_send_payload)
                 sData->state = async_state_read_response;
 
-#if defined(ENABLE_FS) && defined(ENABLE_CLOUD_STORAGE)
+#if defined(ENABLE_CLOUD_STORAGE)
             if (sData->upload)
             {
                 if (sData->request.file_data.resumable.isEnabled())
@@ -593,7 +599,7 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
         if (sData->response.httpCode == 0)
             return function_return_type_continue;
 
-#if defined(ENABLE_FS) && defined(ENABLE_CLOUD_STORAGE)
+#if defined(ENABLE_CLOUD_STORAGE)
 
         if (sData->request.file_data.resumable.isEnabled() && sData->request.file_data.resumable.getLocation().length() && !sData->response.flags.header_remaining && !sData->response.flags.payload_remaining)
         {
@@ -944,7 +950,7 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
                 sData->response.flags.http_response = true;
                 clear(sData->response.val[res_hndlr_ns::etag]);
                 String temp[5];
-#if defined(ENABLE_FS) && defined(ENABLE_CLOUD_STORAGE)
+#if defined(ENABLE_CLOUD_STORAGE)
                 if (sData->upload)
                     parseRespHeader(sData, sData->response.val[res_hndlr_ns::header], sData->request.file_data.resumable.getLocationRef(), "Location");
 #else
@@ -977,7 +983,7 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
 
                 clear(sData);
 
-#if defined(ENABLE_FS) && defined(ENABLE_CLOUD_STORAGE)
+#if defined(ENABLE_CLOUD_STORAGE)
                 if (sData->upload && sData->request.file_data.resumable.isEnabled())
                 {
                     sData->request.file_data.resumable.setHeaderState();
@@ -1849,18 +1855,20 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
 
     void setFileContentLength(async_data_item_t *sData, int headerLen = 0, const String &customHeader = "")
     {
+        size_t sz = 0;
+
 #if defined(ENABLE_FS)
-        if ((sData->request.file_data.cb && sData->request.file_data.filename.length()) || (sData->request.file_data.data_size && sData->request.file_data.data))
+        if (sData->request.file_data.cb && sData->request.file_data.filename.length())
         {
-            size_t sz = 0;
-            if (sData->request.file_data.cb)
-            {
-                sData->request.file_data.cb(sData->request.file_data.file, sData->request.file_data.filename.c_str(), file_mode_open_read);
-                sz = sData->request.file_data.file.size();
-            }
-            else
-                sz = sData->request.file_data.data_size;
+            sData->request.file_data.cb(sData->request.file_data.file, sData->request.file_data.filename.c_str(), file_mode_open_read);
+            sz = sData->request.file_data.file.size();
+        }
+#endif
+        if (sData->request.file_data.data_size && sData->request.file_data.data)
+            sz = sData->request.file_data.data_size;
 
+        if (sz > 0)
+        {
             sData->request.file_data.file_size = sData->request.base64 ? 2 + b64ut.getBase64Len(sz) : sz;
             if (customHeader.length())
             {
@@ -1874,7 +1882,6 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
 
             closeFile(sData);
         }
-#endif
     }
 
     uint8_t slotCount() const { return sVec.size(); }
@@ -1947,7 +1954,7 @@ class AsyncClientClass : public ResultBase, RTDBResultBase
 
     String getHost(async_data_item_t *sData, bool fromReq, String *ext = nullptr)
     {
-#if defined(ENABLE_FS) && defined(ENABLE_CLOUD_STORAGE)
+#if defined(ENABLE_CLOUD_STORAGE)
         String url = fromReq ? sData->request.val[req_hndlr_ns::url] : sData->request.file_data.resumable.getLocation();
 #else
         String url = fromReq ? sData->request.val[req_hndlr_ns::url] : sData->response.val[res_hndlr_ns::location];
diff --git a/src/core/Core.h b/src/core/Core.h
index 64a1bc2..d98a5c1 100644
--- a/src/core/Core.h
+++ b/src/core/Core.h
@@ -7,7 +7,7 @@
 #undef FIREBASE_CLIENT_VERSION
 #endif
 
-#define FIREBASE_CLIENT_VERSION "1.3.8"
+#define FIREBASE_CLIENT_VERSION "1.3.9"
 
 static void sys_idle()
 {
diff --git a/src/core/FileConfig.h b/src/core/FileConfig.h
index d46e814..680133f 100644
--- a/src/core/FileConfig.h
+++ b/src/core/FileConfig.h
@@ -1,5 +1,5 @@
 /**
- * Created July 27, 2024
+ * Created July 30, 2024
  *
  * The MIT License (MIT)
  * Copyright (c) 2024 K. Suwatchai (Mobizt)
@@ -82,7 +82,7 @@ struct firebase_blob_writer
 typedef void (*FileConfigCallback)(FILEOBJ &file, const char *filename, file_operating_mode mode);
 #endif
 
-#if defined(ENABLE_FS) && defined(ENABLE_CLOUD_STORAGE)
+#if defined(ENABLE_CLOUD_STORAGE)
 
 struct file_upload_resumable_data
 {
@@ -207,7 +207,7 @@ struct file_config_data
     String filename;
     size_t file_size = 0;
 
-#if defined(ENABLE_FS) && defined(ENABLE_CLOUD_STORAGE)
+#if defined(ENABLE_CLOUD_STORAGE)
     file_upload_resumable_data resumable;
 #endif
 #if defined(ENABLE_FS)