Most users update their BIOS using an .EXE or .ROM file through a Windows utility. However, you specifically need a if:
If you are reading this, chances are you have an OEM desktop or an All-in-One (AIO) PC with a motherboard inside. And, more importantly, you are probably staring at a black screen, a blinking cursor, or a "Boot Device Not Found" error.
If you have the .bin file and a USB programmer (the most common method for N15235 recovery):
Updating the Foxconn N15235 BIOS BIN file requires careful attention to detail and a basic understanding of the process. Here are the general steps:
Restart your PC, tap F11 to enter the boot menu, and select your USB drive.
Double-check and triple-check the actual etched engineering model on the PCB.
This explains the confusion and the variety of specifications found online: