Something strange just happened. I have the latest ROM from here, the 36 and just got an update only for the bluetooth. I went to my BT menu and was waiting for me to download. Images are in Greek, but I guess you can understand. Check yourselves if you have any similar update to do
Yes I saw it and at changelog says : Fixed some installation failures on virtual A/B devices (If failed, try Advanced > Merge Snapshots)
So this could solve my problem. Will check it tomorrow
Then sorry, something didn't understood well. So, I flash it and I won't loose it in future updates, since it persist across ROM updates, correct? This you mean by persist!?
At the xiaomi forum, for developers, they have now the ability to install Android 13 preview. Of course if you don't know what you are doing, better stay with the ROM from xiaomi.eu, as I finally did.
https://c.mi.com/thread-4065807-1-0.html
I hope you have unlocked bootloader before you try installing the ROM form here....
If yes, then just follow the instructions above. If not, unlock it first