diff --git a/car_net/stFlashServer/handlers.js b/car_net/stFlashServer/handlers.js
index 28b36919f16..383a504bc3f 100644
--- a/car_net/stFlashServer/handlers.js
+++ b/car_net/stFlashServer/handlers.js
@@ -7,6 +7,7 @@ const exec = require('child_process').exec;
 
 function loadBin(httpContent, response) {
 
+    console.log(httpContent.length);
     var uploadClass = main.protoConstructor.Upload;
     var uploadObject = uploadClass.decode(httpContent);
     fs.writeFile(main.binFilePath, uploadObject.data.buffer, "binary", function (error) {
diff --git a/car_net/stFlashServer/server.js b/car_net/stFlashServer/server.js
index ba9ce8a704b..e0cd3ce4288 100644
--- a/car_net/stFlashServer/server.js
+++ b/car_net/stFlashServer/server.js
@@ -9,11 +9,12 @@ function start(route, handlers) {
         var pathname = url.parse(request.url).pathname;
         var httpContent = [];
         request.on("data", function (datas) {
-            var strDatas = datas.toString();
-            for (var i = 0; i < datas.length; ++i) {
-                httpContent.push(strDatas.charCodeAt(i));
+            for (var i = 0; i < datas.length; i++) {
+                // httpContent.push(strDatas.charCodeAt(i));
+                httpContent.push(datas[i]);
             }
         });
+
         request.on("end", function () {
             route(handlers, pathname, httpContent, response);
         });