MI9 cepheus. Can´t load Android system. Message after installation using guided installer

Hello everyone,
first of all thank you for your time.
I am very new to this field, and is the first time installing a rom in a device.
Have chosen because of the possibility to use the guided installer.

I was so happy to be able to find an OS able to substitute MIUI so I followed instructions for unlocking the bootloader of my device and then used iodéos latest installer to install 4.12 20240526 that was the one automatically downloaded to the installer.

after installation the device is rebooting and an screen called RECOVERY showing the following message: ¨cant load android system. Your data may be corrupt. If you continue to get this message, you may need to perform a factory data reset and erase all user data stored in this device¨

since it was a fresh installation and no user data were contained in the device, I selected the factory data reset. but is bringing me back to the same screen.
I have to mention, that after unlocking the device using the xiaomi unlocker, didn´t came to update the software before installing iode via iode installer on windows.

the questions look simple for me, but I suspect not so easy to solve
what have I just done to the phone?
how could I solve that?
is the installer working properly?

thank you very much to everyone