Xiaomi has started sending out a new Android 8.1 Oreo update to the Mi A1 Android One device. This comes after the initial rollout was stopped due to the emergence of a pretty nasty bug that wiped your entire SMS history. Basically you'd apply the update and after the mandatory reboot all your messages would just be gone. That's supposedly no longer the case. The new update even has the July security patches built-in. After you install the new release, you'll be on build OPM1.171019.026.V9.6.4.0.ODHMIFE. The software comes over-the-air as a 467MB download. If you've already...
Source: https://www.gsmarena.com/android_81_oreo_update_for_the_xiaomi_mi_a1_finally_resumes_with_july_security_patch-news-32242.php