I installed it on a Micro SD Card or Braiin OS and did the boot from the SD Card, everything works fine. But, when I transfer Braiin to the System Device (NAND), it concludes, however, it does not run through the internal memory.
It's not uncommon for this virus (which I believe called NightSwitcher) to brick a control board, I believe Xilinx has some secure-boot function which the virus utilizes to disable the bootloader, saw someone ne telegram talk about getting 600 control board bricked, it's likely that you are going to need to get comfy with running BO on an SDcard, or of course, get some used control boards.
You should also isolate all of those miners, and try to find where did the virus come from, did you recently buy a used miner?