diff --git a/client-py3/full/src/uds/forward.py b/client-py3/full/src/uds/forward.py
index b61aac53..75364860 100644
--- a/client-py3/full/src/uds/forward.py
+++ b/client-py3/full/src/uds/forward.py
@@ -9,6 +9,7 @@ import random
 import time
 import select
 import socketserver
+import typing
 
 import paramiko
 
@@ -36,6 +37,11 @@ class ForwardServer(socketserver.ThreadingTCPServer):
 
 
 class Handler(socketserver.BaseRequestHandler):
+    event: threading.Event
+    thread: 'ForwardThread'
+    ssh_transport: paramiko.Transport
+    chain_host: str
+    chain_port: int
 
     def handle(self):
         self.thread.currentConnections += 1
@@ -86,6 +92,7 @@ class Handler(socketserver.BaseRequestHandler):
 
 class ForwardThread(threading.Thread):
     status = 0  # Connecting
+    client: typing.Optional[paramiko.SSHClient]
 
     def __init__(self, server, port, username, password, localPort, redirectHost, redirectPort, waitTime, fingerPrints):
         threading.Thread.__init__(self)
@@ -118,7 +125,7 @@ class ForwardThread(threading.Thread):
 
         ft = ForwardThread(self.server, self.port, self.username, self.password, localPort, redirectHost, redirectPort, self.waitTime, self.fingerPrints)
         ft.client = self.client
-        self.client.useCount += 1  # One more using this client
+        self.client.useCount += 1  # type: ignore
         ft.start()
 
         while ft.status == 0:
@@ -138,7 +145,7 @@ class ForwardThread(threading.Thread):
         if self.client is None:
             try:
                 self.client = paramiko.SSHClient()
-                self.client.useCount = 1  # Custom added variable, to keep track on when to close tunnel
+                self.client.useCount = 1  # type: ignore
                 self.client.load_system_host_keys()
                 self.client.set_missing_host_key_policy(CheckfingerPrints(self.fingerPrints))
 
@@ -176,8 +183,8 @@ class ForwardThread(threading.Thread):
             self.fs.shutdown()
 
             if self.client is not None:
-                self.client.useCount -= 1
-                if self.client.useCount == 0:
+                self.client.useCount -= 1  # type: ignore
+                if self.client.useCount == 0:  # type: ignore
                     self.client.close()
                 self.client = None  # Clean up
         except Exception:
diff --git a/client-py3/full/src/uds/osDetector.py b/client-py3/full/src/uds/osDetector.py
deleted file mode 100644
index 95310db7..00000000
--- a/client-py3/full/src/uds/osDetector.py
+++ /dev/null
@@ -1,48 +0,0 @@
-# -*- coding: utf-8 -*-
-
-#
-# Copyright (c) 2017-2021 Virtual Cable S.L.U.
-# All rights reserved.
-#
-# Redistribution and use in source and binary forms, with or without modification,
-# are permitted provided that the following conditions are met:
-#
-#    * Redistributions of source code must retain the above copyright notice,
-#      this list of conditions and the following disclaimer.
-#    * Redistributions in binary form must reproduce the above copyright notice,
-#      this list of conditions and the following disclaimer in the documentation
-#      and/or other materials provided with the distribution.
-#    * Neither the name of Virtual Cable S.L. nor the names of its contributors
-#      may be used to endorse or promote products derived from this software
-#      without specific prior written permission.
-#
-# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-'''
-@author: Adolfo Gómez, dkmaster at dkmon dot com
-'''
-from __future__ import unicode_literals
-
-import sys
-
-LINUX = 'Linux'
-WINDOWS = 'Windows'
-MAC_OS_X = 'Mac os x'
-
-def getOs():
-    if sys.platform.startswith('linux'):
-        return LINUX
-    if sys.platform.startswith('win'):
-        return WINDOWS
-    if sys.platform.startswith('darwin'):
-        return MAC_OS_X
-    return 'other'
diff --git a/client-py3/full/src/uds/rest.py b/client-py3/full/src/uds/rest.py
index 1f8b7701..2056a974 100644
--- a/client-py3/full/src/uds/rest.py
+++ b/client-py3/full/src/uds/rest.py
@@ -46,7 +46,7 @@ import certifi
 from cryptography import x509
 from cryptography.hazmat.backends import default_backend
 
-from . import osDetector
+from . import os_detector
 from . import tools
 from . import VERSION
 from .log import logger
@@ -206,7 +206,7 @@ class RestApi:
         def urlopen(url: str):
             # Generate the request with the headers
             req = urllib.request.Request(url, headers={
-                'User-Agent': osDetector.getOs() + " - UDS Connector " + VERSION
+                'User-Agent': os_detector.getOs() + " - UDS Connector " + VERSION
             })
             return urllib.request.urlopen(req, context=ctx)