Can't add Somfy Sonesse 30 Wirefree Zigbee to ST

We recently got a motorized blind, a Somfy Sonesse 30 Wirefree Zigbee, but I cant include it in my ST network. When I follow the instructions it fails after step 5 with the following error:

I contacted Somfy support and they say ST made a change in a recent upgrade that broke it, but no information about a patch date or any workarounds.

Is anyone else affected by this? Any thoughts on how to get past this?

Thanks, Carl

I have been looking into this myself. I came accross this info on reddit:

So that the content is mirrored here incase my blog is ever offline. Get the Pin from the commissioning label on the motor tube.

Get a BLE tool, like BT Inspector for iOS. Wake the motor with a 1-2s press of the button next to the USB port.

Connect to it.

To 0000000B-cad9-46c6-a2ea-2ca16d57b4a5 we send the pin code as a 3 byte int, in little-endian.

To 00020001-cad9-46c6-a2ea-2ca16d57b4a5 we simply send 0x01.

It’ll now join any Zigbee network.
@Melair

Reddit forum

See if that gets it to join. Please post response back for others.

The OP is posting about a authentication issue to Somfy. I don’t believe that Reddit post will help in this case.

Report the issue to ST support

I was contacted by a Somfy tech and told that Smartthings had fixed the issue. I retried adding the Tahoma bridge and this time it worked!

Sadly, though I can control the shade’s position now via the ST app (it presents as a 0-100% slider), when I add it to my Goodnight/morning routines the shade doesn’t move.

Any thoughts on what’s missing? Do I need a driver? I don’t see anything specific to Somfy.