I was messing around with some custom roms but forgot to backup my original rom and i felt like going back to stock. I flashed the official stock rom from xiaomi and itt worked fine however it was only android 8 and i was on Pie previously, checking for updates did not work as it said i was up to date even though i was only on november 1st security patch and android 8. Can someone please help or do i just need to wait for the phone to offer the update again.