APX Mode P1761

I have a Nvidia shield k1 P1761 that is stuck in apx mode and will not boot normal, it only has one way to power on and it is vol- power which equals APX mode I cant get nvflash to see the device I am looking for a way to flash it back I think the bootloader is gone so I have all the images that nvidia has offer to us but all the images require fastboot or adb or bootloader access so does anyone have an idea or images for APX flashing…

I’m pretty sure the Shield’s bootloader was meticulously crafted from wet tissue paper.