Upgrade ROM question

[Epo]

Hi
Currently i'm on 12.0.9 QJGMIXM
When i click upd, new rom 13.0.1 SJGMIXM appeared

What's the difference on 1st char Q n S means ?
Can i upd my rom ? Thx

 

[ingbrzy]

Android version..
Q= Android 10
S= Android 12

 

[gogocar62]

Hi
Currently i'm on 12.0.9 QJGMIXM
When i click upd, new rom 13.0.1 SJGMIXM appeared

What's the difference on 1st char Q n S means ?
Can i upd my rom ? Thx

https://xiaomi.eu/community/threads/what-the-letters-in-the-miui-version-designation-mean.62886/post-625681