I have a HA Yellow that I flashed the radio to Thread (shows successfully on OpenThread RCP 2.7.2.0), however, I can't find the Thread device.
Before I flashed it, I had a SLZB-MR4U which I could never get to work reliably. Picked up a ZWA-2 and migrated off my Zooz 800LR to that, works fine. Migrated the ZHA from the Yellow radio to a ZBT-2 and that also works fine. Then flashed the Yellow radio to Thread.
When launching Open Thread Border Router, it prompts for the URL. I tried it with the IP:8081 and also the homeassistant.local (with and without HTTP:// on both). It fails.
So I looked at System Hardware. I can see both the ZBT-2 and ZWA-2 (both under /dev/serial/by-id/ lines and as ttyACM0 and ttyACM1). There are no other "by-id" lines showing.
Open Thread Border Router is not starting, I'm assuming because it can't find the Yellow's Thread radio.
I'm a bit stumped on what to do next. Any suggestions?
Updated supervisor to 2026.05.1 and also Core to 2026.6.2 while troubleshooting this. OS is 17.3.
I also updated OTBR to 3.0.0 and later 3.0.1 (from 2.6.8 I believe previously, have backups from the failed attempts at getting the SLZB-MR4U to work reliably).
I've re-flashed the Thread firmware on the Yellow twice. ZHA does show it's mapped to the ZBT-2 as well. ZBT-2 is not flashed for Thread, only Zigbee.