diff --git a/source/_integrations/zha.markdown b/source/_integrations/zha.markdown
index 9713868f393..1c1a9e8b1b6 100644
--- a/source/_integrations/zha.markdown
+++ b/source/_integrations/zha.markdown
@@ -188,7 +188,23 @@ zha:
 
 You can choose if the IKEA or LEDVANCE provider should be set to enabled (`true`) or disabled (`false`) individually. After the OTA firmware upgrades are finished, you can set these to `false` again if you do not want ZHA to automatically download and perform OTA firmware upgrades in the future.
 
-Note that the `otau_directory` setting is optional and can be used for any firmware files you have downloaded yourself.
+Note that the `otau_directory` setting is optional and can be used for any firmware files you have downloaded yourself, for any device type and manufacturer. For example, Philips Hue firmwares manually downloaded from [here](https://github.com/dresden-elektronik/deconz-rest-plugin/wiki/OTA-Image-Types---Firmware-versions) and/or [here](https://github.com/Koenkk/zigbee-OTA/blob/a02a4cb33f7c46b4d2916805bfcad582124ec975/index.json) added to the `otau_directory` can be flashed, although a manual `zha.issue_zigbee_cluster_command` command currently (as of 2021.3.3) must be issued against the IEEE of the Philips Hue device under Developer Tools->Services, e.g.:
+
+```yaml
+service: zha.issue_zigbee_cluster_command
+data:
+  ieee: "xx:xx:xx:xx:xx:xx:xx:xx"
+  endpoint_id: 11
+  cluster_id: 25
+  cluster_type: out
+  command: 0
+  command_type: client
+  args:
+    - 0
+    - 100
+```
+
+Note: `cluster_id: 25` may also be `cluster_id: 0x0019`. The two are synonymous. 
 
 ### Defining Zigbee channel to use