@mikeH happy to help!
The firmware API returning b233 as stable was due to an oversight. This has been fixed, it now returns:
{
"version": "0.3.4",
"url": "http://repo.onioniot.com/omega2/images/omega2p-v0.3.4-b258.bin",
"build": 258,
"device": "omega2+",
"stable": true
}
Thanks for bringing this to our attention