New (miui 12.5.3 stable redmi note10pro) phone randomly powers iff

[ouais]

Hi, since the last update ( stable)
My phone has powered off alone 2 times, once while i was calling, and another when it was charging...
Is there someone else happening the same ?
In case ,Is it possible to dirty flash the previous stable without issues ?

 

[ouais]

And or is the original cover whitch cant activate the power button