Overview

The BIOS is responsible for the proper operation of the entire computer system. The overall stability and reliability of the computer system as well as its performance in various modes depends on BIOS's functionality, the quality of its code, and its efficiency. The motherboard manufacturers are constantly improving the BIOS code in cooperation with BIOS developers. As a result, new, improved BIOS versions are constantly being released, not only for newly created motherboards, but also for the older ones.

Improved BIOS versions are mainly intended for use with newly released components, taking into account particular features of their architecture. Updating the BIOS version often allows you to compensate for the drawbacks of legacy devices used in the computer system.

The architecture of modern motherboards uses electrically programmed flash memory chips for storing BIOS. These new generation ROM chips, so-called Flash ROMs, can be reprogrammed an infinite number of times by using a flash utility (software). In this case you will have to find the system/motherboard make, model and revision number, and then simply download the proper flash update and utility from the manufacturer's webor FTP-site. Writing a new version of the BIOS code into the flash memory can be done on a computer that is using a motherboard with the BIOS that has to be updated.

Notice that certain computers based on legacy motherboards may not be supported by modern operating systems, such as Windows 98, Windows NT 4.0, and Windows 2000. In such a case it makes sense to update the BIOS version. This is an official recommendation of well-known motherboard manufacturers, such as Abit, ASUSTeK, and Chaintech, to those users that have legacy motherboards from one of the above-mentioned firms. Most other motherboard manufacturers also give similar advice. You should definitely consider updating your BIOS when you decide to purchase a newly released processor. For instance, it is recommended to update your BIOS if you are using Pentium III processors, because most motherboards are intended for use with a Pentium II processor. Consequently, these motherboards are usually good candidates for having their BIOS updated. In many cases, updating the BIOS is also a good idea for Pentium III processors with the Coppermine core.

For certain motherboards that have hidden potential, replacing the BIOS version allows you to discover their hidden capabilities and make them available for use. For a series of motherboards, for example, you will be able to widen the range of processor bus frequencies and supported processor core voltages. In many cases, it also allows you to use the newest processors with legacy motherboards. As an example, consider the well-known Asus P3B-F motherboard. Created before the release of the Pentium III (Coppermine) processor, the Asus P3B-F will be able to work with these processors after updating the BIOS.

Most motherboard manufacturers provide their distributors with BIOS update files. They also publish this information on their Web sites. Usually, the sites of these companies contain various BIOS versions. As a rule, you'll also find their BIOS updating utilities along with documentation describing the new capabilities available after updating the BIOS code.