Finding a specific past beta build of macOS to install on my MBP

[Cross-posted from https://discussions.apple.com/thread/250897234]


More than a month back, I contacted Apple to seek help finding a particular past beta build of macOS. One of the people I spoke with on the phone later sent me the following very nice email as follow-up.

- Screenshot: https://imgur.com/a/NAGWVQI


His main suggestion had been to use the Apple Feedback Assistant to get in touch with the team in charge of the betas, so I did just that, as below.

- Screenshot: https://imgur.com/a/86eDefb


However, it's been almost a month with no response. I emailed back the person I spoke with as well (screenshots below), but no responses from there either.

- Screenshot: https://imgur.com/a/5LgxnKw


I'm now not quite sure what I should do now, so any and all suggestions are welcome. If anyone knows of a way to get the specific build of macOS (build 18f127a), that'd be awesome too. Thank you!

Replies

If you get them, you most likely won't be able to use them as I'd not expect Apple to still be signing older betas.