Writing this on the cMP 3,1 running Monterey via OCLP. As expected, Bluetooth as installed does not function. However, the machine is not getting in a tizzy about it, it's just turned its nose up at the stock card and is pointedly ignoring it.
To compensate, I removed from the Windows machine the dongle I've used in that for a few years now, a CSR 4.0 dongle. It plugged and it played and it just worked. These are still widely available on Amazon and eBay, so maybe another solution to this problem, and one I've not seen mentioned elsewhere. So, Cambridge Silicon Radio, now part of Qualcomm, I believe. Well worth getting hold of one of these for a non-invasive upgrade.
This post also on the Early Intel forum.
To compensate, I removed from the Windows machine the dongle I've used in that for a few years now, a CSR 4.0 dongle. It plugged and it played and it just worked. These are still widely available on Amazon and eBay, so maybe another solution to this problem, and one I've not seen mentioned elsewhere. So, Cambridge Silicon Radio, now part of Qualcomm, I believe. Well worth getting hold of one of these for a non-invasive upgrade.
This post also on the Early Intel forum.