I don’t have any info about how the updates are being distributed, but I did manage to update my phone to the latest version the other week (patch level 5th Sept 2019).
There could be a couple of reasons why the update isn’t coming through, but this might not be anything you can control. One reason could be that the update has been pulled. I have flagged up an issue to support already as it’s labelled both my network providers incorrectly as being Sky (Sky is an MVNO running on the O2 network and even the O2 network is being labelled as Sky now). I’ve also flagged an audio issue, and I don’t know if this is hardware or software related (waiting for a response from support).
Were you online through Wi-Fi or through your mobile data connection? I don’t know if FP3 updates are distributed through mobile data connections. Are the updates full updates or incremental ones again?
But - if I get it right - that’s the patch level of @Chris_R as well, who performed an update.
So you got the phone with the actual patch level already installed. @Desiderius77 on the other hand seems to be stuck on patch level 1. August.
And there should be an update for him, to the next level.
Of course there should be an October or maybe even a November patch; if the monthly updates would work regularly. And would a staged rollout for the monthly update really be advisable to take more than three weeks?
As I’ve said all along, it is possible that this build was pulled. It seems that devices are still being issued with the old build (unless I’ve misunderstood) which again makes me believe that the above build was pulled for whatever reason. I don’t think this can be a staged rollout otherwise everyone would have received this by now. And as far as I’m aware, there has been no further update (I’ve checked regularly too).
All we can do is hypothesise in the absence of any official info from FP itself.
I received my FP3 4 days ago, and it also has Build 8901.2.A.0096.20191001 from September 5. If that was pulled, I’d expect the newest phones to have reverted to the previous version.
Then again, not every version that exists might result in an update. Maybe there’s “Install Images” (including the latest version of the default apps) and “Update Images”.
If that’s the case, it could be there’s a new install image for new phones more or less once a month, but new “Update images” are only deployed if a core component received a critical update that can not be installed through the App-Store. (Aka Kernel Update)
I received my phone with A.0095 installed and it offered the A.0096 update after enabling wifi. I did not install the update, but unlock my bootloader first (which does a full wipe) and was offered the A.0096 update again (not installed yet).
The update also reappears after clearing the data of com.google.android.gms so I do not think the update was pulled or that unlocking has any influence on the updater.