SharGoo Mini OSD Module On Screen Display Video Record for APM APM2.8 Pixhawk PX4 Flight Controller Airplanes + Strap

can i independently run this osd without a Flight Controller? for example just for voltage monitoring

Does it comes pre-shipped with the bootloader? thx

I purchased two of these, and just get a failed to talk to bootloader error when i try to read from ng onfig.exe tool. using a 6pin ftdi. ideas?

is this compatible with mini pix controller?