diff --git a/lib/logitech/unifying_receiver/base.py b/lib/logitech/unifying_receiver/base.py
index a2330389..e56242cb 100644
--- a/lib/logitech/unifying_receiver/base.py
+++ b/lib/logitech/unifying_receiver/base.py
@@ -266,7 +266,7 @@ def make_notification(devnumber, data):
 	return a Notification tuple if it is."""
 	sub_id = ord(data[:1])
 	if sub_id & 0x80 == 0x80:
-		# if this is a HID++1.0 register r/w, bail out
+		# this is either a HID++1.0 register r/w, or an error reply
 		return
 
 	address = ord(data[1:2])
diff --git a/lib/logitech/unifying_receiver/hidpp10.py b/lib/logitech/unifying_receiver/hidpp10.py
index 65ba3c50..9cb88c93 100644
--- a/lib/logitech/unifying_receiver/hidpp10.py
+++ b/lib/logitech/unifying_receiver/hidpp10.py
@@ -158,6 +158,7 @@ def get_serial(device):
 	else:
 		dev_id = 0x30 + device.number - 1
 		receiver = device.receiver
+		assert receiver.unifying_supported
 
 	serial = read_register(receiver, 0x2B5, dev_id)
 	if serial is not None:
diff --git a/lib/logitech/unifying_receiver/receiver.py b/lib/logitech/unifying_receiver/receiver.py
index 75ba20c5..eabb9ff7 100644
--- a/lib/logitech/unifying_receiver/receiver.py
+++ b/lib/logitech/unifying_receiver/receiver.py
@@ -116,22 +116,17 @@ class PairedDevice(object):
 	@property
 	def protocol(self):
 		if self._protocol is None:
-			self._protocol = _base.ping(self.receiver.handle, self.number)
-			# if the ping failed, the peripheral is (almost) certainly offline
-			self.online = self._protocol is not None
-
-			# use the descriptor only as a fallback, because it may not be 100% correct
 			descriptor = _descriptors.DEVICES.get(self.codename)
-			if self._protocol is None:
-				if descriptor and descriptor.protocol is not None:
+			if descriptor:
+				if descriptor.protocol:
 					self._protocol = descriptor.protocol
-			else:
-				if descriptor:
-					if descriptor.protocol is None:
-						_log.info("%s: descriptor has no protocol, should be %0.1f", self, self._protocol)
-					elif descriptor.protocol != self._protocol:
-						_log.error("%s: descriptor has wrong protocol %0.1f, should be %0.1f",
-									self, descriptor.protocol, self._protocol)
+				else:
+					_log.warn("%s: descriptor has no protocol, should be %0.1f", self, self._protocol)
+
+			if self._protocol is None:
+				self._protocol = _base.ping(self.receiver.handle, self.number)
+				# if the ping failed, the peripheral is (almost) certainly offline
+				self.online = self._protocol is not None
 
 			# _log.debug("device %d protocol %s", self.number, self._protocol)
 		return self._protocol or 0
@@ -160,15 +155,12 @@ class PairedDevice(object):
 	@property
 	def kind(self):
 		if self._kind is None:
-			# already handled in the constructor
-			# if self.receiver.unifying_supported:
-			# 	pair_info = self.receiver.read_register(0x2B5, 0x20 + self.number - 1)
-			# 	if pair_info:
-			# 		kind = ord(pair_info[7:8]) & 0x0F
-			# 		self._kind = _hidpp10.DEVICE_KIND[kind]
-			# 		if self.wpid is None:
-			# 			self.wpid = _strhex(pair_info[3:5])
-			if self.protocol >= 2.0 and self.online:
+			if self.receiver.unifying_supported:
+				pair_info = self.receiver.read_register(0x2B5, 0x20 + self.number - 1)
+				if pair_info:
+					kind = ord(pair_info[7:8]) & 0x0F
+					self._kind = _hidpp10.DEVICE_KIND[kind]
+			if self._kind is None and self.protocol >= 2.0 and self.online:
 				self._kind = _hidpp20.get_kind(self)
 			if self._kind is None:
 				descriptor = _descriptors.DEVICES.get(self.codename)
@@ -287,13 +279,13 @@ class PairedDevice(object):
 	__int__ = __index__
 
 	def __eq__(self, other):
-		return other is not None and self.kind == other.kind and self.serial == other.serial
+		return other is not None and self.kind == other.kind and self.wpid == other.wpid
 
 	def __ne__(self, other):
-		return other is None or self.kind != other.kind or self.serial != other.serial
+		return other is None or self.kind != other.kind or self.wpid != other.wpid
 
 	def __hash__(self):
-		return self.serial.__hash__()
+		return self.wpid.__hash__()
 
 	__bool__ = __nonzero__ = lambda self: self.wpid is not None and self.number in self.receiver
 
diff --git a/lib/logitech/unifying_receiver/status.py b/lib/logitech/unifying_receiver/status.py
index c021a5f9..a60ce5c2 100644
--- a/lib/logitech/unifying_receiver/status.py
+++ b/lib/logitech/unifying_receiver/status.py
@@ -262,7 +262,7 @@ class DeviceStatus(dict):
 				_log.debug("polling status of %s", d)
 
 			# read these from the device, the UI may need them later
-			d.protocol, d.firmware, d.kind, d.name, d.settings, None
+			d.protocol, d.serial, d.firmware, d.kind, d.name, d.settings, None
 
 			# make sure we know all the features of the device
 			# if d.features:
diff --git a/lib/solaar/listener.py b/lib/solaar/listener.py
index 82123982..e12bf3b1 100644
--- a/lib/solaar/listener.py
+++ b/lib/solaar/listener.py
@@ -18,7 +18,7 @@ from logitech.unifying_receiver import (Receiver,
 #
 
 from collections import namedtuple
-_GHOST_DEVICE = namedtuple('_GHOST_DEVICE', ['receiver', 'number', 'name', 'kind', 'serial', 'status', 'online'])
+_GHOST_DEVICE = namedtuple('_GHOST_DEVICE', ['receiver', 'number', 'name', 'kind', 'status', 'online'])
 _GHOST_DEVICE.__bool__ = lambda self: False
 _GHOST_DEVICE.__nonzero__ = _GHOST_DEVICE.__bool__
 del namedtuple
@@ -29,7 +29,6 @@ def _ghost(device):
 					number=device.number,
 					name=device.name,
 					kind=device.kind,
-					serial=device.serial,
 					status=None,
 					online=False)
 
diff --git a/lib/solaar/ui/action.py b/lib/solaar/ui/action.py
index 4ce6e89f..6055a30e 100644
--- a/lib/solaar/ui/action.py
+++ b/lib/solaar/ui/action.py
@@ -44,7 +44,7 @@ about = make('help-about', 'About ' + NAME, _show_about_window)
 
 from . import pair_window
 def pair(window, receiver):
-	assert receiver is not None
+	assert receiver
 	assert receiver.kind is None
 
 	pair_dialog = pair_window.create(receiver)
@@ -58,7 +58,7 @@ def pair(window, receiver):
 
 from ..ui import error_dialog
 def unpair(window, device):
-	assert device is not None
+	assert device
 	assert device.kind is not None
 
 	qdialog = Gtk.MessageDialog(window, 0,
diff --git a/lib/solaar/ui/config_panel.py b/lib/solaar/ui/config_panel.py
index 87e2dabe..18dc71aa 100644
--- a/lib/solaar/ui/config_panel.py
+++ b/lib/solaar/ui/config_panel.py
@@ -81,9 +81,8 @@ def _combo_notify(cbbox, setting, spinner):
 # 	return True
 
 
-def _create_sbox(s, device_id):
+def _create_sbox(s):
 	sbox = Gtk.HBox(homogeneous=False, spacing=6)
-	sbox.set_name(device_id)
 	sbox.pack_start(Gtk.Label(s.label), False, False, 0)
 
 	spinner = Gtk.Spinner()
@@ -170,21 +169,24 @@ def create():
 def update(device, is_online):
 	assert _box is not None
 	assert device
+	device_id = (device.receiver.path, device.number)
 
 	# if the device changed since last update, clear the box first
-	if device.serial != _box._last_device:
+	if device_id != _box._last_device:
 		_box.set_visible(False)
-		_box._last_device = device.serial
+		_box._last_device = device_id
 
-	# hide
-	_box.foreach(lambda x, s: x.set_visible(x.get_name() == s), device.serial)
+	# hide controls belonging to other devices
+	for k, sbox in _items.items():
+		sbox = _items[k]
+		sbox.set_visible(k[0:2] == device_id)
 
 	for s in device.settings:
-		k = device.serial + '_' + s.name
+		k = (device_id[0], device_id[1], s.name)
 		if k in _items:
 			sbox = _items[k]
 		else:
-			sbox = _items[k] = _create_sbox(s, device.serial)
+			sbox = _items[k] = _create_sbox(s)
 			_box.pack_start(sbox, False, False, 0)
 
 		if is_online:
@@ -194,16 +196,16 @@ def update(device, is_online):
 
 	_box.set_visible(True)
 
-def clean(device_id):
+def clean(device):
 	"""Remove the controls for a given device serial.
 	Needed after the device has been unpaired.
 	"""
 	assert _box is not None
+	device_id = (device.receiver.path, device.number)
 	for k in list(_items.keys()):
-		sbox = _items[k]
-		if sbox.get_name() == device_id:
+		if k[0:2] == device_id:
+			_box.remove(_items[k])
 			del _items[k]
-			_box.remove(sbox)
 
 
 def destroy():
diff --git a/lib/solaar/ui/tray.py b/lib/solaar/ui/tray.py
index 1ee49929..b065b8f5 100644
--- a/lib/solaar/ui/tray.py
+++ b/lib/solaar/ui/tray.py
@@ -24,6 +24,7 @@ from .window import popup as _window_popup, toggle as _window_toggle
 
 _TRAY_ICON_SIZE = 32 #  pixels
 _MENU_ICON_SIZE = Gtk.IconSize.LARGE_TOOLBAR
+_RECEIVER_SEPARATOR = ('~', None, None, None)
 
 #
 #
@@ -93,8 +94,8 @@ try:
 				if not info[1]:
 					# only conside peripherals
 					continue
-				# compare peripheral serials
-				if info[1] == _picked_device[1]:
+				# compare peripherals
+				if info[0:2] == _picked_device[0:2]:
 					if direction == ScrollDirection.UP and candidate:
 						# select previous device
 						break
@@ -151,7 +152,7 @@ try:
 
 	def _update_tray_icon():
 		if _picked_device:
-			_, _, name, _, device_status = _picked_device
+			_, _, name, device_status = _picked_device
 			battery_level = device_status.get(_K.BATTERY_LEVEL)
 			battery_charging = device_status.get(_K.BATTERY_CHARGING)
 			tray_icon_name = _icons.battery(battery_level, battery_charging)
@@ -209,7 +210,7 @@ except ImportError:
 		_icon.set_tooltip_markup(tooltip)
 
 		if _picked_device:
-			_, _, name, _, device_status = _picked_device
+			_, _, name, device_status = _picked_device
 			battery_level = device_status.get(_K.BATTERY_LEVEL)
 			battery_charging = device_status.get(_K.BATTERY_CHARGING)
 			tray_icon_name = _icons.battery(battery_level, battery_charging)
@@ -253,11 +254,10 @@ def _generate_tooltip_lines():
 	yield '<b>%s</b>' % NAME
 	yield ''
 
-	for _, serial, name, _, status in _devices_info:
-		if serial is None:  # receiver
+	for _, number, name, status in _devices_info:
+		if number is None:  # receiver
 			continue
 
-
 		p = str(status)
 		if p:  # does it have any properties to print?
 			yield '<b>%s</b>' % name
@@ -306,7 +306,7 @@ def _add_device(device):
 	assert receiver_path
 
 	index = None
-	for idx, (path, _, _, _, _) in enumerate(_devices_info):
+	for idx, (path, _, _, _) in enumerate(_devices_info):
 		if path == receiver_path:
 			# the first entry matching the receiver serial should be for the receiver itself
 			index = idx + 1
@@ -315,8 +315,8 @@ def _add_device(device):
 
 	# proper ordering (according to device.number) for a receiver's devices
 	while True:
-		path, _, _, number, _ = _devices_info[index]
-		if path == '-':
+		path, number, _, _ = _devices_info[index]
+		if path == _RECEIVER_SEPARATOR[0]:
 			break
 		assert path == receiver_path
 		assert number != device.number
@@ -324,7 +324,8 @@ def _add_device(device):
 			break
 		index = index + 1
 
-	new_device_info = (receiver_path, device.serial, device.name, device.number, device.status)
+	new_device_info = (receiver_path, device.number, device.name, device.status)
+	assert len(new_device_info) == len(_RECEIVER_SEPARATOR)
 	_devices_info.insert(index, new_device_info)
 
 	# label_prefix = b'\xE2\x94\x84 '.decode('utf-8')
@@ -333,7 +334,7 @@ def _add_device(device):
 	new_menu_item = Gtk.ImageMenuItem.new_with_label(label_prefix + device.name)
 	new_menu_item.set_image(Gtk.Image())
 	new_menu_item.show_all()
-	new_menu_item.connect('activate', _window_popup, receiver_path, device.serial)
+	new_menu_item.connect('activate', _window_popup, receiver_path, device.number)
 	_menu.insert(new_menu_item, index)
 
 	return index
@@ -347,7 +348,7 @@ def _remove_device(index):
 
 	removed_device = _devices_info.pop(index)
 	global _picked_device
-	if _picked_device and _picked_device[1] == removed_device[1]:
+	if _picked_device and _picked_device[0:2] == removed_device[0:2]:
 		# the current pick was unpaired
 		_picked_device = None
 
@@ -355,8 +356,9 @@ def _remove_device(index):
 def _add_receiver(receiver):
 	index = len(_devices_info)
 
-	device_info = (receiver.path, None, receiver.name, None, None)
-	_devices_info.append(device_info)
+	new_receiver_info = (receiver.path, None, receiver.name, None)
+	assert len(new_receiver_info) == len(_RECEIVER_SEPARATOR)
+	_devices_info.append(new_receiver_info)
 
 	new_menu_item = Gtk.ImageMenuItem.new_with_label(receiver.name)
 	_menu.insert(new_menu_item, index)
@@ -365,7 +367,7 @@ def _add_receiver(receiver):
 	new_menu_item.show_all()
 	new_menu_item.connect('activate', _window_popup, receiver.path)
 
-	_devices_info.append(('-', None, None, None, None))
+	_devices_info.append(_RECEIVER_SEPARATOR)
 	separator = Gtk.SeparatorMenuItem.new()
 	separator.set_visible(True)
 	_menu.insert(separator, index + 1)
@@ -379,11 +381,11 @@ def _remove_receiver(receiver):
 
 	# remove all entries in devices_info that match this receiver
 	while index < len(_devices_info):
-		path, _, _, _, _ = _devices_info[index]
+		path, _, _, _ = _devices_info[index]
 		if path == receiver.path:
 			found = True
 			_remove_device(index)
-		elif found and path == '-':
+		elif found and path == _RECEIVER_SEPARATOR[0]:
 			# the separator after this receiver
 			_remove_device(index)
 			break
@@ -411,10 +413,13 @@ def _update_menu_item(index, device):
 #
 
 # for which device to show the battery info in systray, if more than one
+# it's actually an entry in _devices_info
 _picked_device = None
 
 # cached list of devices and some of their properties
+# contains tuples of (receiver path, device number, name, status)
 _devices_info = []
+
 _menu = None
 _icon = None
 
@@ -449,7 +454,7 @@ def update(device=None):
 			receiver_path = device.path
 			if is_alive:
 				index = None
-				for idx, (path, _, _, _, _) in enumerate(_devices_info):
+				for idx, (path, _, _, _) in enumerate(_devices_info):
 					if path == receiver_path:
 						index = idx
 						break
@@ -464,8 +469,8 @@ def update(device=None):
 			is_paired = bool(device)
 			receiver_path = device.receiver.path
 			index = None
-			for idx, (path, serial, name, _, _) in enumerate(_devices_info):
-				if path == receiver_path and serial == device.serial:
+			for idx, (path, number, _, _) in enumerate(_devices_info):
+				if path == receiver_path and number == device.number:
 					index = idx
 
 			if is_paired:
diff --git a/lib/solaar/ui/window.py b/lib/solaar/ui/window.py
index 2716c2c1..e077cbb4 100644
--- a/lib/solaar/ui/window.py
+++ b/lib/solaar/ui/window.py
@@ -8,7 +8,7 @@ from logging import getLogger, DEBUG as _DEBUG
 _log = getLogger(__name__)
 del getLogger
 
-from gi.repository import Gtk, Gdk
+from gi.repository import Gtk, Gdk, GLib
 from gi.repository.GObject import TYPE_PYOBJECT
 
 from solaar import NAME
@@ -32,9 +32,9 @@ _INFO_ICON_SIZE = Gtk.IconSize.LARGE_TOOLBAR
 _DEVICE_ICON_SIZE = Gtk.IconSize.DND
 
 # tree model columns
-_COLUMN = _NamedInts(ID=0, ACTIVE=1, NAME=2, ICON=3, STATUS_ICON=4, DEVICE=5)
-_COLUMN_TYPES = (str, bool, str, str, str, TYPE_PYOBJECT)
-_TREE_SEPATATOR = (None, False, None, None, None, None)
+_COLUMN = _NamedInts(PATH=0, NUMBER=1, ACTIVE=2, NAME=3, ICON=4, STATUS_ICON=5, DEVICE=6)
+_COLUMN_TYPES = (str, int, bool, str, str, str, TYPE_PYOBJECT)
+_TREE_SEPATATOR = (None, 0, False, None, None, None, None)
 
 _TOOLTIP_LINK_SECURE = 'The wireless link between this device and its receiver is not encrypted.'
 _TOOLTIP_LINK_INSECURE = ('The wireless link between this device and its receiver is not encrypted.\n'
@@ -169,6 +169,7 @@ def _create_buttons_box():
 		assert _find_selected_device_id() is not None
 		receiver = _find_selected_device()
 		assert receiver is not None
+		assert bool(receiver)
 		assert receiver.kind is None
 		_action.pair(_window, receiver)
 
@@ -179,6 +180,7 @@ def _create_buttons_box():
 		assert _find_selected_device_id() is not None
 		device = _find_selected_device()
 		assert device is not None
+		assert bool(device)
 		assert device.kind is not None
 		_action.unpair(_window, device)
 
@@ -239,7 +241,7 @@ def _create_tree(model):
 	tree.set_model(model)
 
 	def _is_separator(model, item, _=None):
-		return model.get_value(item, _COLUMN.ID) is None
+		return model.get_value(item, _COLUMN.PATH) is None
 	tree.set_row_separator_func(_is_separator, None)
 
 	icon_cell_renderer = Gtk.CellRendererPixbuf()
@@ -348,7 +350,8 @@ def _find_selected_device():
 def _find_selected_device_id():
 	selection = _tree.get_selection()
 	model, item = selection.get_selected()
-	return model.get_value(item, _COLUMN.ID) if item else None
+	if item:
+		return _model.get_value(item, _COLUMN.PATH), _model.get_value(item, _COLUMN.NUMBER)
 
 
 # triggered by changing selection in the tree
@@ -363,17 +366,18 @@ def _receiver_row(receiver_path, receiver=None):
 
 	item = _model.get_iter_first()
 	while item:
-		if _model.get_value(item, _COLUMN.ID) == receiver_path:
+		# first row matching the path must be the receiver one
+		if _model.get_value(item, _COLUMN.PATH) == receiver_path:
 			return item
 		item = _model.iter_next(item)
 
 	if not item and receiver:
 		icon_name = _icons.device_icon_name(receiver.name)
 		pairing_icon_name = ''
-		row_data = (receiver_path, True, receiver.name, icon_name, pairing_icon_name, receiver)
-		if _log.isEnabledFor(_DEBUG):
-			_log.debug("new receiver row %s", row_data)
-			# _log.debug("receiver %s", receiver)
+		row_data = (receiver_path, 0, True, receiver.name, icon_name, pairing_icon_name, receiver)
+		assert len(row_data) == len(_TREE_SEPATATOR)
+		# if _log.isEnabledFor(_DEBUG):
+		# 	_log.debug("new receiver row %s", row_data)
 		item = _model.append(None, row_data)
 		if _TREE_SEPATATOR:
 			_model.append(None, _TREE_SEPATATOR)
@@ -381,24 +385,25 @@ def _receiver_row(receiver_path, receiver=None):
 	return item or None
 
 
-def _device_row(receiver_path, device_serial, device=None):
+def _device_row(receiver_path, device_number, device=None):
 	assert receiver_path
-	assert device_serial
+	assert device_number is not None
 
 	receiver_row = _receiver_row(receiver_path, None if device is None else device.receiver)
 	item = _model.iter_children(receiver_row)
 	while item:
-		if _model.get_value(item, _COLUMN.ID) == device_serial:
+		if ((_model.get_value(item, _COLUMN.PATH) == receiver_path) and
+			(_model.get_value(item, _COLUMN.NUMBER) == device_number)):
 			return item
 		item = _model.iter_next(item)
 
 	if not item and device:
 		icon_name = _icons.device_icon_name(device.name, device.kind)
 		battery_icon_name = ''
-		row_data = (device_serial, bool(device.online), device.codename, icon_name, battery_icon_name, device)
-		if _log.isEnabledFor(_DEBUG):
-			_log.debug("new device row %s", row_data)
-			# _log.debug("device %s", device)
+		row_data = (receiver_path, device_number, bool(device.online), device.codename, icon_name, battery_icon_name, device)
+		assert len(row_data) == len(_TREE_SEPATATOR)
+		# if _log.isEnabledFor(_DEBUG):
+		# 	_log.debug("new device row %s", row_data)
 		item = _model.append(receiver_row, row_data)
 
 	return item or None
@@ -407,18 +412,18 @@ def _device_row(receiver_path, device_serial, device=None):
 #
 #
 
-def select(receiver_path, device_id=None):
+def select(receiver_path, device_number=None):
 	assert _window
 	assert receiver_path is not None
-	if device_id is None:
+	if device_number is None:
 		item = _receiver_row(receiver_path)
 	else:
-		item = _device_row(receiver_path, device_id)
+		item = _device_row(receiver_path, device_number)
 	if item:
 		selection = _tree.get_selection()
 		selection.select_iter(item)
 	else:
-		_log.warn("select(%s, %s) failed to find an item", receiver_path, device_id)
+		_log.warn("select(%s, %s) failed to find an item", receiver_path, device_number)
 
 
 def _hide(w, _=None):
@@ -451,8 +456,6 @@ def toggle(trigger=None):
 def _update_details(button):
 	assert button
 	visible = button.get_active()
-	device = _find_selected_device()
-	assert device
 
 	if visible:
 		# _details._text.set_markup('<small>reading...</small>')
@@ -480,7 +483,9 @@ def _update_details(button):
 				flag_names = ('(none)',) if flag_bits == 0 else _hidpp10.NOTIFICATION_FLAG.flag_names(flag_bits)
 				yield ('Notifications', ('\n%15s' % ' ').join(flag_names))
 
-		items = _details_items(device)
+		selected_device = _find_selected_device()
+		assert selected_device
+		items = _details_items(selected_device)
 		text = '\n'.join('%-13s: %s' % i for i in items if i)
 		_details._text.set_markup('<small><tt>' + text + '</tt></small>')
 
@@ -502,7 +507,7 @@ def _update_receiver_panel(receiver, panel, buttons, full=False):
 		else:
 			panel._count.set_markup(_NANO_RECEIVER_TEXT[1])
 
-	is_pairing = receiver and receiver.status.lock_open
+	is_pairing = receiver.status.lock_open
 	if is_pairing:
 		panel._scanning.set_visible(True)
 		if not panel._spinner.get_visible():
@@ -683,12 +688,13 @@ def update(device, need_popup=False):
 		assert item
 
 		if is_alive and item:
-			_model.set_value(item, _COLUMN.ACTIVE, True)
-			is_pairing = is_alive and device.status.lock_open
+			was_pairing = bool(_model.get_value(item, _COLUMN.STATUS_ICON))
+			is_pairing = bool(device.status.lock_open)
 			_model.set_value(item, _COLUMN.STATUS_ICON, 'network-wireless' if is_pairing else '')
 
-			if selected_device_id == device.path:
-				_update_info_panel(device, need_popup)
+			if selected_device_id == (device.path, 0):
+				full_update = need_popup or was_pairing != is_pairing
+				_update_info_panel(device, full=full_update)
 
 		elif item:
 			if _TREE_SEPATATOR:
@@ -700,8 +706,8 @@ def update(device, need_popup=False):
 		# peripheral
 		is_paired = bool(device)
 		assert device.receiver
-		assert device.serial
-		item = _device_row(device.receiver.path, device.serial, device if is_paired else None)
+		assert device.number is not None and device.number > 0, "invalid device number" + str(device.number)
+		item = _device_row(device.receiver.path, device.number, device if is_paired else None)
 
 		if is_paired and item:
 			was_online = _model.get_value(item, _COLUMN.ACTIVE)
@@ -717,14 +723,14 @@ def update(device, need_popup=False):
 				_model.set_value(item, _COLUMN.STATUS_ICON, icon_name)
 
 			if selected_device_id is None:
-				select(device.receiver.path, device.serial)
-			elif selected_device_id == device.serial:
+				select(device.receiver.path, device.number)
+			elif selected_device_id == (device.receiver.path, device.number):
 				full_update = need_popup or was_online != is_online
 				_update_info_panel(device, full=full_update)
 
 		elif item:
 			_model.remove(item)
-			_config_panel.clean(device.serial)
+			_config_panel.clean(device)
 
 	# make sure all rows are visible
 	_tree.expand_all()