ASUS Router firmware update 2020/11/26

It seems it only affects devices that use wireless g mode. Newer Sonos use N mode is working fine. 
 

In some strange way it started work on 3.0.0.4.386_41700. Dont know exact what made it work and if its temporary, but 1,5 day uptime now😊. I had planned to downgrade but family members looking on netflix on eth connected device. So started fiddling with wifi settings i hadnt touched before. I did a toggle enable(default) ->disable->enable on IGMP Snooping. Wlan will restart when changing that param. Did one other thing as well, i was at windows pc and started Sonos program. It connected to my sonos but promoted for sw update. Failed 3 times with error 1001, but finally succeded  (fw 12.2.2 build61183220) Since then my Sonos symfonisk has been connected and i can stream as normal. 

Got reply from asus suppport, they recommended to first try router factory reset after firmware upgrade (i did not try)  or otherwise downgrade to older firmware. 

Update: I updated to the beta firmware 9.0.0.4.386.41994 on my Asus RT-AX86U router after speaking to somebody at Asus. They told me the following, after I explained the Sonos issue:

We are sorry to hear, that your Sonos system does not work properly after updating to the Firmware version:3.0.0.4.386_41535 on your RT-AX86U router. 
According to the information you sent us, it seems to be a Software issue. Therefore you should update the Firmware to the latest Version 9.0.0.4.386.41994 from 2021/01/29. This should fix the problem with Sonos. 
You will find the Firmware under the following link: https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX86U/HelpDesk_Download/

After updating the router firmware, I factory reset all of my Sonos speakers (again) and managed to set them up properly. Previously, I managed to do one but then all others would fail. I’ve only had it up and running for a couple of hours so your mileage may vary but I wanted to share anyway.

Hopefully they’ll push a proper release of the firmware soon so you don’t need to mess around with betas.

There’s also a beta version out for the AX58U (9.0.0.4.386.41994), did anyone try it?

Today i finally took the time to dive into this problem. I had the exact same problems as TS with my Sonos Beam and Asus RT-AX58U. Just as everybody did, i'd reset all stuff without any luck. Thanks to this topic i ended up with a working solution and i am happy to share it with the rest of you. Hopefully it helps!

What i did is manually upload the latest BETA release of the Asus RT-AX58U 9.0.0.4.386_41994 found here: https://www.asus.com/Networking-IoT-Servers/WiFi-6/All-series/RT-AX58U/HelpDesk_BIOS/

After update it wasn't working for 100%. It seemed little buggy, the golden tip here was from user @j_a_kjellberg:

So started fiddling with wifi settings i hadnt touched before. I did a toggle enable(default) ->disable->enable on IGMP Snooping.

I did this for 2.4GHz and the 5GHz band and after this change it all seems working as before the Asus update 3.0.0.4.386.41700 Just to confirm, i "toggled” the IGMP setting from enabled to disabled (causes a restart of the WLAN service) and than back from disabled to enabled for both bands.

Thanks all for the help! 

My conclusion was to soon. It seems that a few hours later Sonos start dropping again. So i now downgraded to version 3.0.0.4.384_10177 which is prior to when the problem started. Hopefully this will keep working (if not i will let you guys know) and with the next Asus or Sonos update the problem will be resolved. It worked flawles almost a year so i know it is possible ;-)

Hello guys,

FYI, I had the same issue with latest Asus Firmware (3.0.0.4.386_41793-gdb31cdc) on my ZenWifi XT8. I tried to downgrade my XT8 to previous version but I lost internet connectivity for some reasons (the router was connected and had access to internet but not the clients). So I went back to 3.0.0.4.386_41793-gdb31cdc and restored internet connectivity instantly.

I think I fixed my Sonos issue by removing all the Sonos products from the DHCP reserved addresses. I can now play Spotify music.

Hope it helps

EDIT : I’m using Smart Connect and it works anyways

ERRATUM : it has been working for a while but not anymore. I spent a lot of time with Sonos support. They made me do a wireless configuration reset for nothing of course.

I tried disabling Smart Connect on my router, it seems to work but I’m not very happy with having many SSIDs.

So at the end I decided to switch to a wired system. No more problem obviously...

I just wanted to say many thanks for this.  Thought i was going mad this afternoon trying to set up a new ASUS RT-AX58U with my existing Sonos (that had no issues with the RT-AC68U previously.  Downgraded the firmware and everything connected without issue….  Thank you.