Users of Redmi Note 8 can manually download the Android 11 based MIUI 12.5 update from the link mentioned below.
Talking about the MIUI 12.5 update, this update releasing with the MIUI 12.5 beta 21.1.12, and weighs 2.6GB in size. The update gets the usual MIUI 12.5 design and animation changes along with increased system security.
Caution: We do not recommend flashing ROM if you have little to no experience in software development or flashing custom ROMs. Proceed at your own RISK!
How To Check
Tap on the smartphone Settings > System > Software update > Check for Updates. Download!
Note: Before upgrading to the latest version make sure your smartphone is connected with a proper internet connection, we recommend you to download it over WIFI so that you will not face any error.