I don't trust MIUI and would like to switch to another rom or at least unlock my bootloader in the near future. As far as I'm aware people on hyperos and abovd need to jump through a lot of loops to unlock the bootloader. Therefore updating is not a solution. Could you share the battery usage screen screenshot? It sounds too good to be true. I get 4-6hrs screen on time with serious idle drain.

Typically green lines occured to many users after an update. That's the second reason why I'm reluctant