I dont know the correct way of saying it but my boot0 was bad and couldnt boot into atmosphere thats all I know. i had to flash it again with a fresh 12.0.0 firmware I think
Look at image
when I try to boot into Cfw sysnand via hekate or fusee primary from Tegra it always gives me this screen no matter if I installed a new atmosphere.
SD card is FAT32
Error code 2001-0123 (0xf601)