[solved] I2C and SPI not working on Zero 3E

#1

I tried 2 different displays and a sensor on the I2C pins of 3 different Zero 3E and never saw any device when calling i2cdetect on the console.

Did anyone have success with I2C on a Zero 3E?
Do I have to activate it somehow?

Also I tried to connect a SPI display, but there is now /dev/spi* device in my system, so I can’t use SPI at all.

I would be happy for any help!

#2

I got it working, finally.

Short version:
I installed the Raxda Debian Xfce image, started rsetup, went to the overlay menu and activated the ones I wanted, then did an apt update + upgrade, reboot and it worked