@thomas25 Yes, as @Falcounet says, you should go through the RRF configurator and generate files you can upload to the board to get it working again.

BUT, since you do not have WiFi working, you will have to try some extra steps.

You should use the instructions listed HERE under "Fallback #1".

It's a lot of steps, and is complicated, so try them one at a time, and let us know where you get stuck, or if you have success!