diff --git a/ui/homeui.py b/ui/homeui.py
index 92f1c65..bb7b755 100644
--- a/ui/homeui.py
+++ b/ui/homeui.py
@@ -59,7 +59,8 @@ def show_home_page():
 
 def home_ui(root: mtk.Frame):
     global master
-    install_root_frame = mtk.Frame(root)
-    master = install_root_frame
+    home_root_frame = mtk.Frame(root)
+    master = home_root_frame
     show_home_page()
-    install_root_frame.pack(fill="both", expand=True)
+    home_root_frame.pack(fill="both", expand=True)
+    return home_root_frame
diff --git a/ui/injectimg.py b/ui/injectimg.py
new file mode 100644
index 0000000..fa2f7d1
--- /dev/null
+++ b/ui/injectimg.py
@@ -0,0 +1,30 @@
+import os
+import sys
+from magictk import mtk, color_tmpl
+from magictk import fontconfig
+from ui.lang import l
+from logger.logger import *
+from lib import vars
+from tkinter import Label as tkLabel
+
+now_frame = None
+master: mtk.Frame = None
+
+
+def show_inject_page():
+    global now_frame, master
+    inject_page = mtk.Frame(master)
+    mtk.Frame(inject_page, w=10000).pack(fill="both", expand=True)
+    # TODO
+    mtk.Frame(inject_page, w=10000).pack(fill="both", expand=True)
+    inject_page.pack(fill="both", expand=True)
+    now_frame = inject_page
+
+
+def inject_ui(root: mtk.Frame):
+    global master
+    inject_root_frame = mtk.Frame(root)
+    master = inject_root_frame
+    show_inject_page()
+    inject_root_frame.pack(fill="both", expand=True)
+    return inject_root_frame
diff --git a/ui/installer.py b/ui/installer.py
index 6d6baba..b6fe2a9 100644
--- a/ui/installer.py
+++ b/ui/installer.py
@@ -24,7 +24,7 @@ def show_first_page():
         mtk.Label(first_page, text="\n"+l("InstallInfo"),
                   anchor='center', font=(fontconfig.getfont(), 12), background=color_tmpl.default_color["background"], foreground=color_tmpl.default_color["secondary_text"]).pack(fill='x')
     else:
-        mtk.Label(first_page, text=l("UpgradeWelcome"),
+        mtk.Label(first_page, text=l("InstallWelcome"),
                   anchor='center', font=(fontconfig.getfont(), 22), background=color_tmpl.default_color["background"], foreground=color_tmpl.default_color["primary_text"]).pack(fill='x')
         mtk.Label(first_page, text="\n"+l("InstallInfo"),
                   anchor='center', font=(fontconfig.getfont(), 12), background=color_tmpl.default_color["background"], foreground=color_tmpl.default_color["secondary_text"]).pack(fill='x')
@@ -306,3 +306,4 @@ def installer_ui(root: mtk.Frame):
     master = install_root_frame
     show_first_page()
     install_root_frame.pack(fill="both", expand=True)
+    return install_root_frame
diff --git a/ui/nav.py b/ui/nav.py
index d752ab8..068a617 100644
--- a/ui/nav.py
+++ b/ui/nav.py
@@ -8,7 +8,7 @@ choose_id = 0
 def nav_callback(obj):
     ids = obj.ids
     side = navlists[ids]["side"]
-    global choose_id
+    global choose_id, nav_main, lastobj
     if (choose_id == ids):
         return
     choose_id = ids
@@ -19,9 +19,12 @@ def nav_callback(obj):
         nav_frame_now.place_forget()
         nav_frame_now.place(x=0, rely=1, width=3, height=50, anchor='sw')
 
+    lastobj.pack_forget()
+    lastobj = btn_frame_list[choose_id](nav_main)
+
 
 def pack_nav(master: mtk.Frame, root: mtk.Frame, navlist: list):
-    global nav_frame_now, btn_list, navlists, nav_main, btn_frame_list
+    global nav_frame_now, btn_list, navlists, nav_main, btn_frame_list, lastobj
     navlists = navlist
     nav_frame = mtk.Frame(master)
     nav_frame_show = mtk.Frame(nav_frame, w=3)
@@ -56,6 +59,5 @@ def pack_nav(master: mtk.Frame, root: mtk.Frame, navlist: list):
 
     nav_main = mtk.Frame(
         master, w=1000)
-    btn_frame_list[0](nav_main)
-
+    lastobj = btn_frame_list[0](nav_main)
     nav_main.pack(side="right", fill='both')
diff --git a/ui/win.py b/ui/win.py
index 500a00d..2e3dc19 100644
--- a/ui/win.py
+++ b/ui/win.py
@@ -6,6 +6,7 @@ from logger import config
 from ui import nav
 from ui import installer
 from ui import homeui
+from ui import injectimg
 from lib import get_disk
 from lib import vars
 from ui.lang import load_lang, l
@@ -124,6 +125,10 @@ def main():
             print("PEinjector Version: "+pver)
         sys.exit()
     if (errno == 2 or UPGRADE == 1 or UPGRADE == 2):
+        if (UPGRADE == 1):
+            installer.UPGRADE = 1
+        else:
+            installer.UPGRADE = 0
         if (UPGRADE == 0):
             info("[win]cannot find installed disk")
         elif (UPGRADE == 1):
@@ -145,7 +150,6 @@ def main():
                     sys.exit(1)
                 else:
                     sys.exit()
-        installer.UPGRADE = 1
         if (UPGRADE == 1):
             if (os.path.exists("software")):
                 info("[win]clean install cache")
@@ -158,7 +162,7 @@ def main():
         info(f"[win]found installed disk \"{root_disk}\"")
         nav_list = [
             {"icon": "home-filled", "frame": homeui.home_ui, "side": "top"},
-            {"icon": "dvd", "frame": None, "side": "top"},
+            {"icon": "dvd", "frame": injectimg.inject_ui, "side": "top"},
             {"icon": "plugin", "frame": None, "side": "top"},
             {"icon": "setting", "frame": None, "side": "bottom"}
         ]