ALIX BIOS Update Procedure

In this article I will describe how to update the BIOS of your ALIX or PCEngines device using a serial console with XMODEM. For this process I will be using my favorite terminal emulator Tera Term. You will also need to grab the new BIOS here.

Default serial console settings for your ALIX/PCEngines device (can be changed):

  • Bits per second: 9600
  • Data bits: 8
  • Parity: None
  • Stop bits: 1
  • Flow Control: None

To update your BIOS:

  1. Connect to the console port using terminal emulation parameters (see above). In Tera Tern to edit the settings, navigate to setup > serial port…
  2. Once you have successfully established serial communication with the device, reboot the device by disconnecting and then reconnecting it’s power cable.
  3. The device will begin it’s POST procedure as displayed in the serial terminal emulator. Be ready at the keyboard to press the “s” key during the RAM Test.
  4. Once in the BIOS you will see something similar to the picture below.alix-bios
  5. Press the ‘x’ key for XMODEM upload, follow the prompts to upload the ALIX BIOS binary .
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