Prakashreddy211
for Redmi 5 miui 10.1.2.0 is the latest version which is based on Android nougat

Redmi got a new update of 10.2.1 on last week of march but after releasing that update the suspended it after few days....
so the current version of MIUI on Redmi 5 is 10.1.3 which is based on oreo