--- title: BIOS Update on the Acer Aspire One layout: default created: 2008-10-21 01:36:01 +0200 updated: 2009-09-25 14:10:27 +0200 toc: false tags: - know-how - hardware - acer - aspire - bios --- To update the BIOS without Windows, install [UNetBootIn](http://unetbootin.sf.net/) and use it to put FreeDOS on a flash drive. Now extract the e.g. `v.3305.zip` to it and reboot the machine. Press F12 in the right moment and select your USB flash drive from the list. Press ENTER when you see the `boot:` prompt, then launch the *Default* configuration and select to boot FreeDOS without any drivers. Now you should be at the `A:\>` prompt which is the emulated floppy drive. Change to `C:` and execute `3305.BAT`. Gateway BIOS ============ [macles](http://macles.blogspot.com/2009/03/brightness-table.html) points out that there are netbooks with the same hardware as the AAO and therefore the BIOS file is compatible. You can download the Gateway-BIOS from there. In the comments you will find tips and tricks if your sound or function keys are not working after the update. *[BIOS]: Basic Input/Output System *[AAO]: Acer Aspire One