v2026.6.0-pre1

[Nerivec]

Important

You will need Z2M dev/edge (or at least July 2026 release) for coordinator (zigbee_ncp) use. zigbee-herdsman 10.6.0 or later

https://docs.silabs.com/sisdk-release-notes/2026.6.0/sisdk-release-notes-overview/

Tip

Starting with SDK v2026.6.0, Silabs is considering June releases (vyyyy.6.p) as LTS ("recommended baseline for production" - 30-month maintenance), and December releases (vyyyy.12.p) as Interim ("for prototyping, early feature access, and development work" - 6-month maintenance).

Full Changelog: v2025.12.3-pre1...v2026.6.0-pre1

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This discussion was created from the release v2026.6.0-pre1.

[propi62]

updating the slzb07-mg24 from v2025.12.3-pre1 without clearing something worked perfect.

[jonzuchin]

Hello, I'm new on the bussiness, I have a Dongle-M and I can update using this NPC firmware over the graphical interface-> Custom Firmware? Or I need to flash by USB? For now I use 8.2.2 beta from sonoff. Thanks very much in advance and for the great work

[Nerivec]

Yes, you can use the interface, or any other flasher (they all do pretty much the same thing in this regard).
Be sure to pick the proper firmware:
https://github.com/Nerivec/silabs-firmware-builder#choosing-the-right-firmware

Zigbee NCP (coordinator for use with e.g. Zigbee2MQTT):

• latest: https://github.com/Nerivec/silabs-firmware-builder/releases/download/v2025.6.2-update1/sonoff_dongle-m_zigbee_ncp_8.2.2.0_115200_sw_flow.gbl
• pre-release (will need dev branch of Z2M until July 1st release): https://github.com/Nerivec/silabs-firmware-builder/releases/download/v2026.6.0-pre1/sonoff_dongle-m_zigbee_ncp_2026.6.0_9.1.0_115200_sw_flow.gbl

[jonzuchin]

Hello, updated a dongle-M by GUI from beta 8.2.2 sonoff to 2026.6.0 pre-1 and everything is fine until now. Thanks!!

[burmistrzak]

I'm still a bit confused about the SL_ZIGBEE_KEY_TABLE_SIZE option. If I understand the docs correctly, then this table is used for storing APS link keys.
So with just a single slot available, there can only be a one device e.g. requiring APS encryption on the network?

[burmistrzak]

Answering my own question to an extent:

For SDK 6.6.x or lower, make sure the Link Key Table size is at least one entry because the following commands populate the Link Key Table. The key table size can be configured under the NCP Configuration plugin on the host side. For SDK 6.7.x or higher, the following instruction populates the Transient Key Table which is already sized appropriately.

So at least install codes are not affected by the link key table size..?
The only use case for APS encryption I'm aware of is Zigbee Direct configuration on e.g. ubisys devices.

[Asmir1975]

Updated my SLZB-06M today from v2025.12.3-pre1 as expected, without problems. 👋

[chris-1243]

Updated my SLZB-07MG24 from v2025.12.3-pre1 without any issues. It seems to work fine👍

EDIT: Not a single error since the last 20 days. This firmware seems really stable, at least, in my network.

[mamrai1]

Flashed coordinator firmware over 8.2.2 on Sonoff zbdongle. Working as expected..
Unfortunately the router firmware for Sonoff zbdongle does not work. Tried twice with Sonoff webflasher. Reverted to 8.2.2.

[Nerivec]

What was the issue with the router firmware? Couldn't flash, couldn't pair, etc.?

[mamrai1]

Flashing completes but no response from device. After reflashing again with 8.2.2 it gets responsive again. No need for rejoining to network

[Nerivec]

Moved to #109

[jorisvervuurt]

Working fine on SLZB-07MG24.
Does this release include full Zigbee 4.0 support? :)

[Nerivec]

Haven't had time to investigate the Z4 angle yet; also no device out there yet, except for router builds. There are quite a lot of things to consider, and some aspects require multi-step processes to reach them 😁
It's very early in the game 😉

[trenb]

Hopefully not a dumb question, but, I don't see any bootloader options for Sonoff. It looks like almost every other platform has a bootloader, except Sonoff. I'm sure there's a good reason, but I don't know what it is. I've checked several other releases and I don't see a bootloader there.

Thanks in advance!

[trenb]

Also, upgraded my SLZB-06Mg26U with no problems from 9.0.1.

[MartB]

SLZB-MR5U is not working, i used the SLZB-06Mg24 binary as recommended but it doesnt start ash correctly. So far only the stock firmware works there.

[Nerivec]

Can you open an issue with some more details? Exact firmware used (link), previous firmware, versions working / not working, error seen, etc.

[MartB]

@maxios777 was faster than me, but i added my details: #110