So I recently tried flashing the Vortex 285 with the firmware and betaflight 3.1.7 and it all went fine.
Hooked up my Fatshark HDO's, ran the txwizard and even managed to arm and fly my drone.

The problem is that every time I unplug the battery and try to restart the drone it just keeps beeping in a weird tone. There is a video linked below for reference.

The OSD still works and the transmitter is connected, because it shows in the OSD that it's switching from acro- to horizon mode, but that's also the only thing it does. It won't arm or go into the setup menu.

Any help would be appreciated.