Xiaomi Mi Notebook Pro

Hello everyone, i want to unlock XTU advanced settings in my BIOS, In version 0401 of my bios the option is unlocked, but now on 0502 it's not, i don't know if i can just downgrade and if there is other differences between this 2 version.

Can you help us ? all the community arround this computer want to know if we can downgrade or unlock the current bios.

I have the I7 8GO RAM, there is other version: I7 16go RAM and i5 8Go RAM.

  XMAKB5R0P0502.zip (Size: 5.31 MB / Downloads: 0)

  XMAKB5R0P0401 (Bios dump) Flash with with caution.rar (Size: 4.72 MB / Downloads: 0)

  Xiaomi Mi Notebook Pro Bios 0300.rar (Size: 4.91 MB / Downloads: 0)