For good measure please install the 2023.2 firmware using cfclient first (to update all the decks and communication firmwares)

Install dependencies according to the official docs

git submodule update --init --recursive -- external/firmware
git submodule update --init -- external/rl_tools

macOS

brew install libusb

build

cd external/firmware
make cf2_defconfig
cd ../../
make

flash

cfloader flash build/cf2.bin stm32-fw -w radio://0/80/2M

macOS

DYLD_LIBRARY_PATH="/opt/homebrew/lib:$DYLD_LIBRARY_PATH" cfloader flash build/cf2.bin stm32-fw -w radio://0/80/2M
DYLD_LIBRARY_PATH="/opt/homebrew/lib:$DYLD_LIBRARY_PATH" cfclient