Thread discussion: http://forum.eeeuser.com/viewtopic.php?pid=129976
Do not try this unless you have a genuine reason for doing so. Following the instructions in this guide may result in your Eee being permanently bricked. Even though this guide contains instructions to recover from such a state, there can be no guarantees for it's success. Recovery may only be possible if the first part of the BIOS is not corrupted.
However, other AMIBIOSs contain a recovery “boot block” that is not updatable. The Eee may also have this, but is not confirmed.
The Eee PC is not compatible with the instructions in the above link, since it does not have a Floppy Drive.
Note: Imation branded Flash Drives may not be compatible. Backup all data on your Flash Drive before doing any of the following steps.
Insert a Flash Drive into a USB Port on any working computer. Double-click on “My Computer” and right-click on the Flash Drive icon, and format it to “FAT” (AKA FAT16). FAT32 and NTFS will not work.
Go to http://support.asus.com/ and click “Download” on the top menu. For “Select Product”, choose “Eee PC” and the same for “Select Series”, choose your model and click on the green Search button. Click on “BIOS” and click on the “Global” link to download the .zip for the latest BIOS revision listed there.
Extract the .zip file, and you will end up with a .ROM file. Right-click on the .ROM file and rename it to 701.ROM (700.ROM for the 2G model, 702.ROM for the 8GB model, or 900.ROM for 900 model). Keep in mind if the file originally did not appear to have a .ROM extension, do not append it, and just rename to 700/701/702/900 (depends on your model). You can check if the filename is correct by opening an MS-DOS prompt, using the “cd” command to traverse to the correct path and typing “dir” to list the filenames. If it is named 700.ROM, 701.ROM, 702.ROM or 900.ROM (again depends on your model) then this is correct. The filesize should be 524288 bytes.
Copy this file to the root directory (i.e not in a folder) on your Flash Drive. Wait 15 seconds (to allow the OS to write to the drive) then remove the Flash Drive.
Insert the Flash Drive into any USB port on the Eee PC, and turn it on. If your Flash Drive has lights on it, you will see it blink for 1-2 seconds. Wait 10 whole minutes, and turn the Eee PC off.