Pixhawk initial setup problem

Hello everyone,
I got new pixhawk 2.4.8 radiolink , when i flash with qgroundcontrol i cannot select airframe as vtol. It says reboot needed to update SYS_Autostart and when i set it amd reboot it it goes to default aain after reboot. All parameters set default after every reboot. And sensors are not found in the qgroundcontrol when i try calibrate.
Thank you,