Interesting. Error code 37 doesn’t show up on a search of the Sonos FAQs, so I’m uncertain of what it is. I’m assuming you’re not running any port blocking software/firmware, such as virus protection, pi-holes, VPNs or work ‘profiles’
It’s unfortunate that you’ve tried a factory reset , that tends to only temporarily allay problems at best, and always deletes data stored on the speaker that might be able to be used to help you. However, at this point, I’d suggest a call to Sonos Support directly to discuss it.
When you speak directly to the phone folks, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.
Thank you.
Yes error 37 is rare! I tried and failed to do a Factory Reset as that’s what all the help recommended. No port blocking etc. All the other 6 speakers are fine.
The agent on Sonos chat couldn’t help. I’ll call them tomorrow.
Spent 90 minutes on the phone with Sonos. The agent was very patient and polite. He consulted with other tech experts during the call. They tried everything. They had never seen an error 37 before.
Net result… the boot loader has malfunctioned, and I need to buy a replacement speaker.