[solved] Commands over Serial not working "unknown command:" (8 replies)

Hallo,
i hope im in the right place here.
I have an upgraded Anet A8 with ramps1.4. I wanted to upgrade to TMC2130 and wired them for spi. Upload new config -> power on -> stepper wont move.
I tried to read-out the stepper driver over serial with m122 s1. -> "echo:Unknown command: 'm122 s1'.
I was never using the serial port before... so i tried other commands like "M105" or "M106 S127".
All i get is
"Unknown command: [the command i gave]"
"ok"

Do i need to enable serial commands?
Config is atatched. [attachment 109484 Configuration_adv.h] [attachment 109485 Configuration.h]

hope someone can help :)