Originally Posted by
zzzz8 FYI, I just did a factory reset and I'm still not getting an OTA notification - and when I go to Settings > About Phone > System Updates, it still no updates are available. This is extremely frustrating.
At this point I would suggest flashing the ROM image manually. Assuming a US XT1575 version...
Either Nougat version NPH25.200-22 which is available here:
https://forum.xda-developers.com/mot...ctory-t3704142
Or if you want to stay with Marshmallow use MPHS24.49-18-8, look here:
https://forum.xda-developers.com/mot...oader-t3489110
Although both of these are shared for people to "go back to stock" they should work on a stock, bootloader locked device. Note that you cannot downgrade with a locked bootloader, but you can upgrade to one of these versions. They are they latest versions available as "official" stock images that have leaked from Motorola... they are digitally signed, official images.
After installing either one, you should be prompted to update via OTA to the current releases. Note that Marshmallow will constantly nag you update until you are current.