Xiaomi has officially announced the latest stable MIUI 12 ROM for owners of the China variant of the Redmi Note 8. The software update is available either over-the-air (OTA) or as a download. Users of the Global version of the Redmi Note 8 can expect the Android 10-based update to land on their devices soon.
https://www.notebookcheck.net/Redmi-Note-8-gets-a-new-stable-MIUI-12-ROM-in-China-with-the-global-variant-following-soon.509080.0.html