=====PC Engines APU2 - BIOS Update=====

==== Download files ====
  * Download latest BIOS: [[https://pcengines.github.io/]]
  * Download TinyCore [[http://pcengines.ch/file/apu2-tinycore6.4.img.gz]]

==== Prepare bootable USB drive ====
  * Make sure the USB drive is not mounted (''lsblk'' or ''mount'' command).
  * Write TinyCore and BIOS image to USB:<code>
gunzip apu2-tinycore6.4.img.gz
sudo dd if=apu2-tinycore6.4.img of=/dev/sdX bs=4k oflag=direct status=progress

sudo mount /dev/sdX1 /mnt
sudo cp apu2_v4.19.0.1.rom /mnt
sudo umount /mnt
</code>

==== Update BIOS ====
  * Connect USB drive to APU2
  * Connect APU2 via serial:<code>screen /dev/ttyUSB0 115200</code>
  * Connect power
  * Update BIOS<code># cd /media/SYSLINUX
# flashrom --programmer internal -w apu2_v4.19.0.1.rom
</code>

{{tag>[hardware apu2 arch linux firmware BIOS ]}}