SLZB-06 - 20240710 - problem with BUFFER_FULL - downgrade required to solve

[giopeco]

Hi,
I've a SLZB-06 adapter running with HA zigbee2mqtt.

Adapater
Core 2.7.1
FW coordinator: 20240710

Home Assistant
Core 2025.2.4
Supervisor 2025.02.1
Frontend 20250214.0

Zigbee2mqtt: 2.1.1-1

This morning at 5:00am the network collapsed. Log of z2m shows error: failed with status '(0x11: BUFFER_FULL)' (expected '(0x00: SUCCESS)'

I tried to restore my HA backup of yesterday: no result.

I tried to downgrade adapter core with no results.

I downgraded adapter firmware to 20221226, problem solved, network back online.

Working conf:

Adapater
Core 2.7.1
FW coordinator: 20240710

[Koenkk]

When upgrading to 20240710 now, how long does it take for the issue to happen again?

[giopeco]

I just updated, I'll let you know.

20221226-->20230507-->20230922-->20240315-->20240315-->20240710

[giopeco]

Hi, the issue happened after few minutes

atached the log of last 1000 lines

45df7312_zigbee2mqtt_2025-02-18T06-27-51.473Z.log

[giopeco]

downgraded to 20221226. Still the same issue.

To make it work you also have to uninstall and reinstall z2mqtt, this way it works with 20221226.

Tonight i will try same way with 20240710.

[giopeco]

ok, i've just:

• stopped z2m
• updated SLZB-06 TO 20240710
• Started z2m

started working properly at 19:50 - 18.02.25, I will keep you updated.

[thogens]

Is there any update?
Interestingly I moved from Sonoff P to SLZB-06 and with stock firmware of 20221226 the network just worked perfectly and rock solid for 3 weeks!
Accidentally I flashed 20221226 over the old one and got some error.
I was curious and updated to 20240710 and I was getting the exact same issues, I had with Sonoff P as well. -> Routers leaving network and overall instability.
Rolling back to 20221226 solves the issue for now and I'm looking closely to any misbehaviour. (as with the Dongle-P I also thought rolling back solves everything, but the instabilities came back)

[giopeco]

hello, for me at the moment the system is stable