I managed to get the MallocArray version installed via the ESPHome addon. Upon it restarting I see it shows up in the ESPHome integration, but the device box in ESPHome addon for the AirGradient One just remains “Offline”.
I have a few other esphome devices and not come across this before. Is there anything I should look for?
Try changing the line add_mac_suffix: "true" to add_mac_suffix: "false"
This will remove the MAC adddress from the name and then ESPHome will know the correct name to look up, since it doesn’t know the MAC and therefor can’t find the device.
Another alternative is to add a static IP to the config file and then ESPHome can find it by IP.