Two Xiaomi 15 phones, one works, one doesn't (post update)

Hi

So, I have two Xiaomi 15 phones
One of them recently had android OS update (see details below), since then issues started. it used to work fine prior.
When I connect the updated phone, AA restarts constantly, every 3-5 seconds, endless loop of restarts, as if the connector is loose. But it's fine, it's the same very stable high quality cable is used for other Xiaomi 15 phone and used for this phone prior to the update.

Car is Peugeot 2008, made in 2020.

I already tried:

1. clearing cache
2. removing updates
3. changing cable

What else can I do? I don't want to do factory reset if that can be avoided.

Thank you so much!

https://preview.redd.it/lmkbr8pqqwrf1.jpg?width=1200&format=pjpg&auto=webp&s=f729a73cc2008ec87ce5e4d8a80e1350a2be3044