If you use Corne, Nijuni, Dao or any other keyboard with corne-like matrix you may clone this repo After that, go to "Actions" tab in github and enable it
You will get archive with firmware
If you use dongle, load "corne_central_dongle-nice-nano-v2-zmk.uf2" if you use nice!nano controller for dongle Or "corne_central_dongle-seeeduino_xiao_ble-zmk.uf2" if you use xiao for dongle Also, if you use dongle load "peripheral" uf2 for left and right parts
If you don't use Dongle, than load "corne_central_left-nice_nano_v2-zmk.uf2" on the left part and "corne_peripheral_right-nice_nano_v2-zmk.uf2" for the right part