diff --git a/custom_components/duofern/__init__.py b/custom_components/duofern/__init__.py
index 32dad02..a12260e 100644
--- a/custom_components/duofern/__init__.py
+++ b/custom_components/duofern/__init__.py
@@ -132,17 +132,22 @@ def get_device_id(hass_entity_id):
             get_all = call.data.get('all', None)
             hass_device_id = call.data.get('device_id', None)
             if get_all:
-                device_ids = hass.data[DOMAIN]['stick'].duofern_parser.modules['by_code']
+                _LOGGER.info("Asking all devices for update")
+                device_ids = hass.data[DOMAIN]['stick'].duofern_parser.modules['by_code'].keys()
             else:
+                _LOGGER.info("Asking specific devices for update")
                 device_ids = [get_device_id(i) for i in hass_device_id]
         except Exception:
-            _LOGGER.exception(f"exception while getting device id {call}, {call.data}, i konw {hass.data[DOMAIN]['deviceByHassId']}, fyi deviceByID is {hass.data[DOMAIN]['devices']}")
+            _LOGGER.exception(f"Exception while getting device id {call}, {call.data}, i know {hass.data[DOMAIN]['deviceByHassId']}, fyi deviceByID is {hass.data[DOMAIN]['devices']}")
             for id,dev in hass.data[DOMAIN]['deviceByHassId'].items():
                 _LOGGER.warning(f"{id}, {dev.__dict__}")
             raise
         if device_ids is None:
             _LOGGER.warning(f"device_id missing from call {call.data}")
             return
+        _LOGGER.info(f"Updating these devices {' '.join(device_ids)}")
+        if not device_ids or all([i is None for i in device_ids]):
+            _LOGGER.warning("Found no valid device ids???")
         for device_id in device_ids:
             if device_id is not None:
                 if device_id not in hass.data[DOMAIN]['stick'].duofern_parser.modules['by_code']:
diff --git a/custom_components/duofern/manifest.json b/custom_components/duofern/manifest.json
index a6e22ab..4a42806 100644
--- a/custom_components/duofern/manifest.json
+++ b/custom_components/duofern/manifest.json
@@ -6,6 +6,6 @@
   "config_flow": true,
   "issue_tracker": "https://github.com/gluap/pyduofern-hacs/issues" ,
   "codeowners": ["@gluap"],
-  "requirements": ["pyduofern==0.35.1"],
+  "requirements": ["pyduofern==0.35.2"],
   "version": "0.5.2"
 }
diff --git a/custom_components/duofern/services.yaml b/custom_components/duofern/services.yaml
index 7c36ece..ba62126 100644
--- a/custom_components/duofern/services.yaml
+++ b/custom_components/duofern/services.yaml
@@ -8,7 +8,15 @@ start_pairing:
       example: 60
 
 sync_devices:
-  description: re-sync devices (trigger after pairing, if it does not work, a restart of homeassistant may help)
+  description: Re-sync Devices (trigger after pairing, if it does not work, a restart of homeassistant may help)
+
+clean_config:
+  description: Clean the duofern config. Will erase all devices from duofern config.
+    Paired devices should automatically be re-added after when they speak to duofern stick.
+    Non-Paired bogous devices not. **Use with caution - not tested.**
+    If you want to be sure manually edit ``.duofern.json`` and remove unwanted devices there
+    Be aware that homeassistant might keep its own record of these unwanted devices - you
+    have to deall with these via homeassistant GUI.
 
 dump_device_state:
   description: dump state of all known devices as a warning. State reflects state considering all
@@ -16,10 +24,10 @@ dump_device_state:
     Purpose is to debug whether there's a discrepancy with state reflected in Homeassistant.
 
 ask_for_update:
-  description: ask the specified device for an update (in case of missed radio transmissions)
+  description: Ask the specified device for an update (in case of missed radio transmissions).
   fields:
     all:
-      description: update all devices
+      description: Update all devices.
       required: false
       selector:
         boolean:
@@ -33,9 +41,9 @@ ask_for_update:
           integration: duofern
 
 set_update_interval:
-  description: set the automatically broadcasting a "please send an update" interval.
+  description: Set the automatically broadcasting a "please send an update" interval.
     Be aware that this is not persisted. Use an automation to trigger this at Homeassistant
-    start if you always want it to be set to your custom value
+    start if you always want it to be set to your custom value.
   fields:
     period_minutes:
       description: approximate forced refresh interval in minutes - defaults to 5, 0 means never