This is just a quick post for anyone looking to update the BIOS for their Asus EEE 1201N. As of writing, the latest is BIOS version 0326, though a full list can be found on Asus website, or directly from their FTP server (holy crap it’s slow…).

1. Format a USB stick using FAT (or possibly FAT32). It’s worth noting that the EZ Flash utility seems to dislike certain USB sticks, rejecting my 4GB iamaKey though accepting my 1GB so-old-that-the-brand-has-warn-off drive.
2. Unzip the new BIOS.
3. Rename the file to 1201N.ROM (case sensitive!).
4. Move it to the root of the USB stick.
5. Put the USB stick in the 1201N (if you prepared it elsewhere), and make sure all other USB devices are removed.
6. Reboot/Turn-on the 1201N.
7. Enter the BIOS (F2) and note any settings, then reset the BIOS to default settings. This is especially important if you have over-clocked or anything similar. Save and Exit (F10).
8. When the 1201N reboots, press and hold ALT+F2 to enter the EZ Flash utility.
9. The EZ Flash utility should automatically perform the update then reboot. Note: This took a long time for me (10mins+), it may be because I was using such an ancient and slow USB stick, or may just be an incredibly slow process.
10. Enter the BIOS again (F2) and put back any custom settings you had. Save and Exit (F10).