diff --git a/addons/hw_blackbox_be/controllers/main.py b/addons/hw_blackbox_be/controllers/main.py
index 8db84fbbffa..13579ee7b9b 100644
--- a/addons/hw_blackbox_be/controllers/main.py
+++ b/addons/hw_blackbox_be/controllers/main.py
@@ -3,6 +3,8 @@
 
 import logging
 import serial
+import subprocess
+from os.path import isfile
 from os import listdir
 from threading import Thread, Lock
 
@@ -148,15 +150,20 @@ class Blackbox(Thread):
             ser.close()
             return ""
 
-blackbox_thread = Blackbox()
-hw_proxy.drivers['fiscal_data_module'] = blackbox_thread
+if isfile("/home/pi/registered_blackbox_be"):
+    blackbox_thread = Blackbox()
+    hw_proxy.drivers['fiscal_data_module'] = blackbox_thread
 
-class BlackboxDriver(hw_proxy.Proxy):
-    @http.route('/hw_proxy/request_blackbox/', type='json', auth='none', cors='*')
-    def request_blackbox(self, high_level_message, response_size):
-        to_send = blackbox_thread._wrap_low_level_message_around(high_level_message)
+    class BlackboxDriver(hw_proxy.Proxy):
+        @http.route('/hw_proxy/request_blackbox/', type='json', auth='none', cors='*')
+        def request_blackbox(self, high_level_message, response_size):
+            to_send = blackbox_thread._wrap_low_level_message_around(high_level_message)
 
-        with blackbox_thread.blackbox_lock:
-            response = blackbox_thread._send_to_blackbox(to_send, response_size, blackbox_thread.device_path)
+            with blackbox_thread.blackbox_lock:
+                response = blackbox_thread._send_to_blackbox(to_send, response_size, blackbox_thread.device_path)
 
-        return response
+            return response
+
+        @http.route('/hw_proxy/request_serial/', type='json', auth='none', cors='*')
+        def request_serial(self):
+            return subprocess.check_output("ifconfig eth0 | grep -o 'HWaddr.*' | sed 's/HWaddr \\(.*\\)/\\1/' | sed 's/://g'", shell=True).rstrip()[-7:]
diff --git a/addons/sale_stock/sale_stock.py b/addons/sale_stock/sale_stock.py
index a588003456e..5915273fe21 100644
--- a/addons/sale_stock/sale_stock.py
+++ b/addons/sale_stock/sale_stock.py
@@ -236,6 +236,13 @@ class SaleOrderLine(models.Model):
                 pass
             if mto_route_id and mto_route_id in product_routes.ids:
                 is_available = True
+        if not is_available:
+            product_routes = product.route_ids + product.categ_id.total_route_ids
+            for pull_rule in product_routes.mapped('pull_ids'):
+                if pull_rule.picking_type_id.sudo().default_location_src_id.usage == 'supplier' and\
+                        pull_rule.picking_type_id.sudo().default_location_dest_id.usage == 'customer':
+                    is_available = True
+                    break
 
         # Check Drop-Shipping
         if not is_available: