How to backup as much as possibe to downgrade

[Catarsi]

Hello,
I have a Xiaomi 14 with the latest weekly of HyperOS but there's a charging bug that is a dealbreaker to me so I want to downgrade to a previous version. So I am wondering what would be the best way to backup as much as possible, apps, configurations, call history even files in order to restore it later. Since as far as I know I will have to do a Format Data to downgrade.

 

[JiaiJ]

There was a similar thread recently, maybe you will find relevant information : https://xiaomi.eu/community/threads/backup-and-restore.72931/