In September last year, Xiaomi released the Android 11 update for Redmi 9A users in China. And, it took over three months to reach the global variant. The latest OTA update for Redmi 9A (global) is tagged with the software version V12.5.1.0.RCDMIXM. It has a download size of about 1.9GB. According to the changelog for Redmi 9A, the MIUI 12.5 Enhanced brings Atomized Memory, Smart Balance, and improved performance. The Atomized Memory is a RAM management technique that efficiently manages RAM among running processes. Smart Balance feature makes core system improvements to use hardware resources in a better way.

Xiaomi launched the Redmi 9A Device:

Redmi 9A

Region:

Global

Software version:

V12.5.1.0.RCDMIXM

Download link:

Full ROM

Changelog:

MIUI12.5 Enhanced Swift performance. More life between the charges. Atomized memory: Ultra-fine memory management mechanism will make RAM usage more efficient. Smart balance: Core system improvements allow your device to make the best of the flagship hardware specs. System Stable MIUI based on Android 11

[source]

Global Redmi 9A gets Android 11 and MIUI 12 5 Enhanced update - 22