diff --git a/src/ArtStationDownloader.py b/src/ArtStationDownloader.py
index 8afa880..112c03b 100644
--- a/src/ArtStationDownloader.py
+++ b/src/ArtStationDownloader.py
@@ -6,7 +6,7 @@
 Copyright 2018 Sean Feng(sean@fantablade.com)
 """
 
-__version__ = "0.3.0"
+__version__ = "0.3.1"
 # $Source$
 
 import argparse
diff --git a/src/app.py b/src/app.py
index bd70c50..63ec532 100644
--- a/src/app.py
+++ b/src/app.py
@@ -10,13 +10,18 @@
 class App:
     def __init__(self, version):
         self.core = Core(self.log)
-        self.user_settings = sg.UserSettings()
+        self.user_config = sg.UserSettings(
+            os.path.join(os.path.abspath("."), "config.ini"),
+            use_config_file=True,
+            convert_bools_and_none=True,
+        )
+        self.user_settings = self.user_config["Settings"]
 
         # 兼容模式
-        if not self.user_settings.exists("root_path"):
-            root_path = config.read_config("config.ini", "Paths", "root_path")
-            if root_path:
-                self.user_settings.set("root_path", root_path)
+        root_path = self.user_config["Paths"]["root_path"]
+        if root_path:
+            self.user_settings["root_path"] = root_path
+            self.user_config["Paths"].delete_section()
 
         self.root_path = self.user_settings.get(
             "root_path", os.path.join(os.path.expanduser("~"), "ArtStation")
@@ -39,6 +44,7 @@ def __init__(self, version):
                 lambda: self.download_txt(args), ""
             ),
             "-DOWNLOAD-SORTING-": self._set_download_sorting,
+            "-BROWSE-": self.browse_directory,
             "log": self._log,
             "popup": self._popup,
             "set_download_buttons": self._set_download_buttons,
@@ -82,6 +88,7 @@ def download(self):
             usernames, self.window["-TYPE-"].get(), self.download_sorting
         )
         self.window.write_event_value("set_download_buttons", True)
+        self.user_settings.set("default_username", username_text)
 
     def get_download_txt_file(self):
         self.window.write_event_value("set_download_buttons", False)
@@ -111,7 +118,7 @@ def download_txt(self, filename):
         self.window.write_event_value("set_download_buttons", True)
 
     def browse_directory(self):
-        root_path = sg.popup_get_folder("Select a folder")
+        root_path = sg.popup_get_folder("Select a folder", default_path=self.root_path)
         if root_path:
             self.root_path = root_path
             self.window["-PATH-"].update(root_path)
@@ -120,7 +127,12 @@ def browse_directory(self):
     def create_layout(self):
         sg.theme("Dark Blue 3")
         layout = [
-            [sg.Text('Usernames (split by ","):'), sg.InputText(key="-USERNAME-")],
+            [
+                sg.Text('Usernames (split by ","):'),
+                sg.InputText(
+                    self.user_settings.get("default_username", ""), key="-USERNAME-"
+                ),
+            ],
             [
                 sg.Text("Type:"),
                 sg.Combo(
@@ -141,8 +153,8 @@ def create_layout(self):
             ],
             [
                 sg.Text("Path:"),
-                sg.InputText(key="-PATH-", default_text=self.root_path),
-                sg.FolderBrowse("Browse", key="-BROWSE-"),
+                sg.InputText(key="-PATH-", default_text=self.root_path, disabled=True),
+                sg.Button("Browse", key="-BROWSE-", bind_return_key=True),
             ],
             [
                 sg.Button("Download", key="-DOWNLOAD-", bind_return_key=True),
diff --git a/src/core.py b/src/core.py
index 2935681..d9ed8c6 100644
--- a/src/core.py
+++ b/src/core.py
@@ -9,7 +9,7 @@
 from concurrent import futures
 from multiprocessing import cpu_count
 from urllib.parse import urlparse
-import http.client
+import http.client as http_client
 from bs4 import BeautifulSoup
 import pafy
 import requests
@@ -44,24 +44,26 @@ def __init__(self, log_print=None):
         self.futures = []
         self._session = requests.session()
         self.proxy_setup()
-    
+
     def http_client_get(self, url):
         try:
             headers = {
-            'User-Agent': "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36",
-            'Accept': "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
-            'Accept-Language': "en-US,en;q=0.5",
-            'Accept-Encoding': "gzip, deflate, br",
+                "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36",
+                "Accept": "text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
+                "Accept-Language": "en-US,en;q=0.5",
+                "Accept-Encoding": "gzip, deflate, br",
             }
             parsed_url = urlparse(url)
-            conn = http.client.HTTPSConnection(parsed_url.netloc)
-            conn.request("GET", parsed_url.path+"?"+parsed_url.query, headers=headers)
+            conn = http_client.HTTPSConnection(parsed_url.netloc)
+            conn.request(
+                "GET", parsed_url.path + "?" + parsed_url.query, headers=headers
+            )
 
             r = conn.getresponse()
 
         except:
-            print(f'Error in http_client_get')
-            
+            print(f"Error in http_client_get")
+
         return r
 
     def http_get(self, url):
@@ -173,7 +175,9 @@ def get_projects(self, username):
                     else:
                         self.log(err + "Unknown error")
                     break
-                channel = BeautifulSoup(r.read().decode("utf-8"), "lxml-xml").rss.channel
+                channel = BeautifulSoup(
+                    r.read().decode("utf-8"), "lxml-xml"
+                ).rss.channel
                 links = channel.select("item > link")
                 if len(links) == 0:
                     break