@György-Farkas
My question is if i connect a switch only with 3,3V and an input GPIO, could i always read the correct input? That option is necessary to keep my cable management.
Maybe its to be realized by using analog inputs with the arduino dock.

Thanks for help.

It seems the digital pins are very sensitive. And because there are no analog pins included in the Omega2 there is only the option to get an arduino dock 2 to realize my cable management.
I whant to use only 2 connections from switch to the Omega (not enought cable).

Might it be possible?

Then you should use the USB option. And you can only use an USB storage. There is no option to use the microSD card.

With ethernet expansion try:
https://docs.onion.io/omega2-docs/Firmware-Flashing-Web-Recovery.html

better keep out anything except what is in description

You can try to use the webbased installation. But then you need an ethernet expansion.

When not try:
https://docs.onion.io/omega2-docs/Firmware-Flashing-from-USB-storage.html

when u try to startup normal at which point it fails?

have you tried to install new os from usb?

Hello dear community,

my problem:
when i set the GPIO2/3 to input ("gpioctl dirin 2") and read the signal ("gpioctl get 2") it gets allways a LOW. Now the strange thing. When i plug in a cable and no connection on the other side (just in air) it gets sometimes a HIGH. Not helpfull to read a switch.

I tried to reset the Omega2 but same problem

I have no more ideas how to fix this issue.
Hope you can help me. Im a bit frustrated