I've read the release notes for Insider Preview Build 14372Mobile that an issue with Bluetooth clipping of voice prompts is supposed to be fixed. I'm having an issue where, when connecting to our car, initiating a call hangs the phone, and I suspect that it is related to this clipping issue. I'm an insider, but "Windows Insider Program" option in the phone Settings >> Update & Security area is not present like is shown in the tutorial I found at Windows 10 Mobile Insider Preview Builds - Stop Receiving . I think this is where I would get the insider preview updates. (I have a Lumia 950 XL.)

Can anyone assist? I tried searching but couldn't find anything on this. Thanks!