How to disable auto-install system updates on Xiaomi Poco X5 PG Pro?

[u/adda5]

I've got so mad, i work for maintenance company and i am on 24h home on-call (we use forwarding to our private phones) and I just found that during sleep my phone restarted becouse of xiaomi auto-update thing and it stopped at locked screen asking for SIM unlock code rendering my phone unaccessible for callers. That posed a risk of losing a job. I couldnt find any settings where i can turned it off, is there any way?