Bosch Twinguard in Z2M, Install code adjusted for missing CRC

Offler · March 16, 2025, 2:24pm

Edit: It does seem that the alarm does not support channel 16. Use 15 instead and restart Z2M, and factory reset Twinguard.

Just received the smoke detector and powered it on, read the install instructions on Z2M devices list and got this message when attempted to use Install Code:

[2025-03-16 14:53:23] info: zh:controller: Install code was adjusted for reason ‘missing CRC’.

It was reported and resolved about a month ago:

github.com/Koenkk/zigbee2mqtt

Installcode no more working with 2.0.0 for Bosch Twinguard

opened 06:20PM - 18 Jan 25 UTC

closed 07:52PM - 10 Feb 25 UTC

passiber

problem

### What happened? I detected after updating to version 2.0.0, the install code… seems not longer working for Bosch Twinguard. I have several Bosch Twinguards in my Zigbee Network. It was possible to connect them with the old version 1.42 without problem. Some days ago I updated to version 2.0.0. Today I wanted to connect a new Bosch Twinguard,. But it's not possible. I also tried to reconnect another Bosch Twinguard, which was already in my network before. Also here I can't get a connection with the version 2.0.0. So I think there is something wrong with the install code "adjustment" which was included with the install code fix? I get following messages in the log: ``` 2025-01-18 18:56:50] info: zh:controller: Install code was adjusted for reason 'missing CRC'. [2025-01-18 18:56:50] info: zh:controller: Adding install code for 0x000D6F00191051B7. [2025-01-18 18:56:50] info: z2m: Successfully added new install code [2025-01-18 18:58:11] error: zh:controller: Interview failed for '0x000d6f00191051b7 with error 'Error: Interview failed because can not get node descriptor ('0x000d6f00191051b7')' ``` So it seems, that the Install code will be "adjusted", but it will be not successful to connect the device. The Bosch Twinguard have a 91-digit install code. ### What did you expect to happen? It should work like already in the previous versions ### How to reproduce it (minimal and precise) Everytime when I try to connect a Bosch Twinguard with 91-digit install code at the frontend with "tools->add install code" ### Zigbee2MQTT version 2.0.0 ### Adapter firmware version 20210708 ### Adapter zstack ### Setup Home Assistant Core 2025.1.4, Pi4, SONOFF ZBDongle-P ### Debug log _No response_

Zigbee2MQTT version
2.1.3 commit: unknown

Coordinator type
EmberZNet

Coordinator revision
7.4.4 [GA]

Frontend version
0.9.4

zigbee-herdsman-converters version
23.2.0

zigbee-herdsman version
3.2.7

I am trying to pair it via Sonoff ZBDongle-E.

Given the history on Github, I would assume the issue is resolved, no idea what is wrong.