diff --git a/VERSION b/VERSION
index fd2a0186..94ff29cc 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-3.1.0
+3.1.1
diff --git a/innosetup.iss b/innosetup.iss
index 799876ad..3fd65132 100644
--- a/innosetup.iss
+++ b/innosetup.iss
@@ -59,6 +59,10 @@ Source: "settings.yaml"; DestDir: "{app}"; Flags: ignoreversion
 Source: "win32env.bat"; DestDir: "{app}"; Flags: ignoreversion
 Source: "winrun.bat"; DestDir: "{app}"; Flags: ignoreversion
 Source: "SuperBuild\download\vc_redist.x64.exe"; DestDir: {tmp}; Flags: dontcopy
+Source: "winpostinstall.bat"; DestDir: "{app}"; Flags: ignoreversion
+
+[Dirs]
+Name: "{commonappdata}\ODM"; Permissions: users-modify
 
 [Icons]
 Name: {group}\ODM Console; Filename: "{app}\console.bat"; WorkingDir: "{app}"
@@ -69,6 +73,7 @@ Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{
 
 [Run]
 Filename: "{tmp}\vc_redist.x64.exe"; StatusMsg: "Installing Visual C++ Redistributable Packages for Visual Studio 2019"; Parameters: "/quiet"; Check: VC2019RedistNeedsInstall ; Flags: waituntilterminated
+Filename: "{app}\winpostinstall.bat"; StatusMsg: "Post Install"; Flags: waituntilterminated runhidden
 Filename: "{app}\console.bat"; Description: {cm:LaunchProgram,ODM Console}; Flags: nowait postinstall skipifsilent
 
 [Code]
diff --git a/opendm/ai.py b/opendm/ai.py
index 834d4043..eab76499 100644
--- a/opendm/ai.py
+++ b/opendm/ai.py
@@ -3,11 +3,16 @@ from opendm.net import download
 from opendm import log
 import zipfile
 import time
+import sys
 
 def get_model(namespace, url, version, name = "model.onnx"):
     version = version.replace(".", "_")
 
-    base_dir = os.path.join(os.path.abspath(os.path.join(os.path.dirname(__file__), "..")), "storage", "models")
+    base_dir = os.path.join(os.path.dirname(__file__), "..")
+    if sys.platform == 'win32':
+        base_dir = os.path.join(os.getenv('PROGRAMDATA'),"ODM")
+    base_dir = os.path.join(os.path.abspath(base_dir), "storage", "models")
+    
     namespace_dir = os.path.join(base_dir, namespace)
     versioned_dir = os.path.join(namespace_dir, version)
 
diff --git a/win32env.bat b/win32env.bat
index 8428b1b3..a73f63d5 100644
--- a/win32env.bat
+++ b/win32env.bat
@@ -15,6 +15,7 @@ set GDAL_DRIVER_PATH=%GDALBASE%\gdalplugins
 set OSFMBASE=%ODMBASE%SuperBuild\install\bin\opensfm\bin
 set SBBIN=%ODMBASE%SuperBuild\install\bin
 set PDAL_DRIVER_PATH=%ODMBASE%SuperBuild\install\bin
+set PYTHONPYCACHEPREFIX=%PROGRAMDATA%\ODM\pycache
 
 set PATH=%GDALBASE%;%SBBIN%;%OSFMBASE%
 set PROJ_LIB=%GDALBASE%\data\proj
@@ -23,14 +24,6 @@ set VIRTUAL_ENV=%ODMBASE%venv
 set PYTHONPATH=%VIRTUAL_ENV%
 set PYENVCFG=%VIRTUAL_ENV%\pyvenv.cfg
 
-rem Hot-patching pyvenv.cfg
-echo home = %ODMBASE%venv\Scripts> "%PYENVCFG%"
-echo include-system-site-packages = false>> "%PYENVCFG%"
-
-rem Hot-patching cv2 extension configs
-echo BINARIES_PATHS = [r"%SBBIN%"] + BINARIES_PATHS> venv\Lib\site-packages\cv2\config.py
-echo PYTHON_EXTENSIONS_PATHS = [r'''%VIRTUAL_ENV%\lib\site-packages\cv2\python-3.8'''] + PYTHON_EXTENSIONS_PATHS> venv\Lib\site-packages\cv2\config-3.8.py
-
 if not defined PROMPT set PROMPT=$P$G
 
 if defined _OLD_VIRTUAL_PROMPT set PROMPT=%_OLD_VIRTUAL_PROMPT%
diff --git a/winpostinstall.bat b/winpostinstall.bat
new file mode 100644
index 00000000..690af9aa
--- /dev/null
+++ b/winpostinstall.bat
@@ -0,0 +1,14 @@
+set ODMBASE=%~dp0
+set VIRTUAL_ENV=%ODMBASE%venv
+set PYENVCFG=%VIRTUAL_ENV%\pyvenv.cfg
+set SBBIN=%ODMBASE%SuperBuild\install\bin
+
+rem Hot-patching pyvenv.cfg
+echo home = %ODMBASE%venv\Scripts> "%PYENVCFG%"
+echo include-system-site-packages = false>> "%PYENVCFG%"
+
+rem Hot-patching cv2 extension configs
+echo BINARIES_PATHS = [r"%SBBIN%"] + BINARIES_PATHS> venv\Lib\site-packages\cv2\config.py
+echo PYTHON_EXTENSIONS_PATHS = [r'''%VIRTUAL_ENV%\lib\site-packages\cv2\python-3.8'''] + PYTHON_EXTENSIONS_PATHS> venv\Lib\site-packages\cv2\config-3.8.py
+
+cls
\ No newline at end of file