sudo rkdeveloptool ld
sleep 10
sudo rkdeveloptool db rk3399_loader_v1.27.126.bin
sleep 20
sudo rkdeveloptool ld
sleep 10
sudo rkdeveloptool ef
sudo rkdeveloptool ef
sudo rkdeveloptool ef
sudo rkdeveloptool ef
sudo rkdeveloptool ef
sudo rkdeveloptool wl 0 .img/quantum-flow-nas-os-0.5.0-web-rock-pi-4b-plus.img
sleep 7
sudo rkdeveloptool rd