Bticino's OTA updates not work

[leoogermenia]

What happened?

I'm trying to update my switch (K4003C), but I recived multiple errors. Sometimes I can start the update, but when it arrives to 98/99% it fails

Zigbee2MQTT version

1.35.1

Adapter firmware version

6.10.3.0 build 297

Adapter

ITead Sonoff Zigbee 3.0 USB Dongle Plus V2 model "ZBDongle-E"

Setup

Add-on on HA (Proxmox VM)

Debug Log

Update of 'Lampadario Cameretta' failed (OTA: Timeout, device did not request any image blocks)

[Krewwell]

I have the same provblem but no solution for now....maybe someone else can help :(

[FabianMangold]

Hi again @leoogermenia and @Krewwell ,

Any chance you could give the update a try using the latest DEV versions of Z2m please ?
Several features were implemented to improve the Legrand / BTicino OTA updates. Despite those, you may need to power cycle the devices prior to the upgrade still, and give the OTA several attempts in a row, but this should do the trick.

Thanks for any feedback you may provide.

[leoogermenia]

Hi again @FabianMangold

At the end I was able to update all the device simply trying lots of time to update it and after some errors they can finally update it.

[Krewwell]

Hi @FabianMangold thank you! I have seen the last release of z2m and the new features for legrand/bticino devices.
Thanks to you, now i have update 6 devices BTicino but i had to try several time before I succeeded. I still have two more devices to update (of the same type as those already updated) but after several attempts I still haven't succeeded. I've already tried turning off the power for a few minutes but the update doesn't start. In any case I will try again (if I managed to update the others I will succeed for these too).

Have a nice day and thanks again!

[leoogermenia]

@Krewwell ciao, quali dispositivi hai che non ti si aggiornano?

[Translate]
Hi, what devices aren't updating?

[Krewwell]

Hi @leoogermenia. I use the K4027C and the k4003C BTicino. The K4027C is the most difficult to upgrade

[leoogermenia]

@Krewwell i was able to update it with lots of tries.. I have only one K4027C and it update with "no" problem

[FabianMangold]

Thanks both.

@leoogermenia, can we close this issue ?
@Krewwell: Ok perfect, let me know if you still have problems. If so, please open a new issue, and just tag me so that we can investigate.