BIOS FLASHING GUIDES/FAQ's

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Spinner

Getting it done!

5,003 Posts

6 Jun 2003, 1:49am

THIS IS A GREAT GUIDE ON HOW TO FLASH YOUR BIOS WITH SOME GREAT BASIC INFORMATION TO BOOT

FEEL FREE TO POST MORE BASIC INFO, FAQ'S AND TIPS

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BIOS (basic input/output system) is the program a personal computer's CPU uses to get the computer system started when you turn it on. It also manages data flow between the computer's operating system and attached devices such as the hard disk, video adapter, keyboard, mouse, and printer.

BIOS is an integral part of your computer and comes with it when you bring it home. In contrast, the operating system can either be preinstalled by the manufacturer or vendor or installed by a user. BIOS is a program that is made accessible to the CPU on an erasable programmable read-only memory (EPROM) chip. When you turn on your computer, the CPU passes control to the BIOS program, which is always located at the same place on EPROM. This is the POST process or "Power On Self Test."

When BIOS starts the POST process starting your computer, it first determines whether all of the attachments are in place and operational and then it loads the operating system into your computer's random access memory RAM from your hard disk or a floppy disk.

With BIOS, your operating system and its applications are freed from having to understand exact details, such as hardware addresses, about the attached input/output devices. When device details change, only the BIOS program needs to be changed. Sometimes this change can be made during your system setup. In any case, neither your operating system or any applications you use need to be changed.

Although BIOS is theoretically always the intermediary between the CPU and I/O device control information and data flow, in some cases, BIOS can arrange for data to flow directly to memory from devices, such as video cards, that require faster data flow to be effective.

Originally, the EPROM chips used in a PC were printed circuits that were pressed into the slot on the motherboard or soldered on. Then a few years back, the Bios manufacturers begin to use erasable programmable EPROM chips for the Bios. The reasoning was to allow for easier updates to the central core BIOS. Why is this important. In the past, you would either replace the motherboard or at least the BIOS chip if you needed to upgrade the basic system programming. Now, it can be done with a simple software upgrade that erases the existing BIOS code and then writes a new code to the BIOS EPROM chip. This process of erasing and writing new code is called "FLASHING." The Flash Bios often allows a motherboard manufacturer to add features to a BIOS for hardware and settings they did not consider when the motherboard was manufactured, such as larger hard drives, faster CPUs, even specialty devices like ZIP drives. A Flash Bios can even be offered to correct errors in the code of the original BIOS, called BUGS.

BIOS & CMOS BASICS

Where to get a Bios Flash Upgrade

Today, we have three major companies who build BIOS chips and program them: AWARD, AMI and PHOENIX. You should also know that AWARD was recently purchased by PHOENIX and they no longer sell BIOS chips to motherboard manufacturers. There are some other off brand manufacturers, but you rarely see their product on a motherboard. There also are companies that sell replacement BIOS chips, such as Mr. Bios, though the need for these replacement chips has dropped to nothing with the advent of FLASH BIOS.

The first thing you need before you begin is the FLASH upgrade software for your motherboard. An upgrade is not found at AWARD Bios, AMI Bios or Phoenix Bios' web site. They are in the business of selling to motherboard manufacturer's and not the general public. The Flash Upgrade for your motherboard is always supplied by the motherboard manufacturer. You can nearly always download these upgrades from their web or FTP site. We maintain a list of motherboard manufacturer's web sites for this purpose. If you computer was built by a company such as Micron, Gateway, IBM, Packard Bell and others... often you can find the BIOS Upgrade file on their web site.

Simply write down the version number of your Bios, this can be read above the memory test during the beginning of the POST process when you start your computer. Also, determine the model of the motherboard you are using. These two items are all you will need to find the upgrade for your motherboard on the manufacturer's web site.

The FLASH UTILITY is nearly always included in the Flash upgrade file you will download. So, download it first and examine the contents of this file before you begin searching for a Flash Utility file.

FLASHING THE BIOS

Okay... you have downloaded the file, unzipped it and discovered it contains three files: the Flash Utility file, the upgrade data file and an instructions README file.

READ the instructions file and follow it in detail. I have seen a couple of people take for granted they know how to flash a BIOS only to find a new requirement and they are stuck with a mess. READ the INSTRUCTIONS.

Typically, you will need two floppy disks. One disk is your Boot disk with an operating system and the other contains your Flash Utility and the Upgrade file. You might be able to put all this on one floppy, but I recommend against it. When you Flash upgrade your BIOS, one option is to make a backup copy of your existing BIOS code. You will want to do this and need room for the Flash Utility file to store your old Bios code.

Next, start your computer and enter the CMOS, the area in the BIOS that contains settings you can modify. Now look through all the settings and become comfortable with them and even write down any you may need to remember, such as the settings for your hard drive and maybe any Com ports you have turned off to allow a modem to function.

Now, boot your computer with the boot floppy disk, I always use a simple operating system like MS Dos v6. You can use any that you have on hand: MS Dos, OS/2, Win95/98/NT... it is not important. The system only needs the command operator in order to run the Flash Utility file. Then, insert your Flash floppy disk. The first thing you should do is read and write down the EXACT name of the Flash Upgrade file, this is usually something like: be6_mu.bin (this is the name of the one for my ABIT BE6 motherboard). You will be required to type this in during the upgrade process and you will need it.

Just execute the Flash Utility and follow the instructions on the screen. Be sure to make a backup of your existing BIOS when prompted. The name of this backup is not important to anyone but you, so use a name that is easy for you.

I highly recommend that even if you have read the instructions for flashing your Bios that were included, you should also print them out so you have them handy for reference.

After you have finished this process, hopefully with success, all that is need to do is remove your boot disk and reboot the computer. You will need to enter the CMOS during the POST phase and make all the changes your CMOS requires in order to use the hardware on your system, such as identify your hard drive or turn off a Com port so your modem does not conflict with it.

Now, you should be done and all set.

Some final notes: This process sounds simple, but should it fail during the process, you could have some extreme problems. You could be left with a BIOS chip with no programming and in that case it will not be able to start the computer again. This will require either replacing the BIOS chip or the motherboard. This is not always a safe and simple operation. Be sure you are comfortable with this level of upgrading. It maybe something you wish to have a professional do for you. But, once you have done this procedure, you will understand and feel more confident should the need arise to Flash Upgrade another computer. Just never become to complacent with this procedure... it can be ruinous to your motherboard.

A TIP

When you are in the middle of Flash upgrading your BIOS the last thing you need is a power outage. Imagine the power goes out right as you are writing in the new BIOS code. The system is left without a BIOS, you are then either replacing the BIOS chip or the motherboard.

One of the most important things you can do during this process is to have the computer connected to a strong UPS. You will want a UPS that can support the computer for at least 15 minutes should the power suddenly go out. Most people do not consider this and get away with it... just know that it is a risk.

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THANKS TO 'FREEPCTECH' FOR THIS GUIDE

HERE ARE SOME MORE LINKS WHICH MIGHT PROVE INFORMATIVE :

http://www.pcstats.com/articleview.cfm?articleID=672
http://www.motherboards.org/articles...ides/42_1.html

__________________

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Spinner edited : 7 Jun 2003 at 3:59am .

Thrax

Cad

23,407 Posts

6 Jun 2003, 2:07am

Why do I get nothing but the unshakeable feeling that this is the most overdone guide for the simplest concept?

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Spinner

Getting it done!

5,003 Posts

6 Jun 2003, 2:19am

I know, but there's nothing like being thorough ; as MediaMan so often illustrates in his articles.

ANOTHER TIP

Some motherboard manufactuers recommend reseting the CMOS after a flash, ABIT is one mobo maker which I know recommends that. In most cases (depending on what flash utility you are using) you can add a command parameter to the flash command to reset the CMOS for you after the flash, which saves you having to open your case.

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Spinner edited : 6 Jun 2003 at 2:26am .

SimGuy

Your World. Delivered.

2,049 Posts

6 Jun 2003, 3:06am

For detailed information on identifying your system BIOS type, motherboard manufacturer & a listing of almost every BIOS for every system ever made, check out Wim's BIOS Guide:

http://www.wimsbios.com/

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Spinner

Getting it done!

5,003 Posts

7 Jun 2003, 3:55am

IN-WINDOWS UPDATE PROGRAMS

Here are a couple of links for in-windows bios update programs. I'll add more as I find them. Note some of the programs are beta versions only, so use at your own risk. Thanks to Gobd for the heads up on these.

ABIT: http://fae.abit.com.tw/eng/download/dl_flashmenu.htm

ASUS: http://www.asus.com/support/downloa...updt5.07.01.zip

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SimGuy

Your World. Delivered.

2,049 Posts

15 Jun 2003, 4:11pm

For information on BIOS beep codes for almost any BIOS made under the sun (AMI, Award, AST, Compaq, IBM, Mylex, Phoenix & Quadtel), check out this guide:

http://bioscentral.com/

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Borg Number One

Short-Media BIOS modifier

41 Posts

22 Mar 2005, 11:06pm

Flashing And Bios Utilities Info

-Abit Flash Menu 1.36 is a really great BIOS flashing tool. It detects and displays the used FLASHROM/EEPROM Chip type and it is more than user friendly. It works on/with many 'non-Abit' boards too.

-The latest AMI/Award WinFlash Utilities can be found in the MSI update utility 'MSI Live Update'. (http://www.msi.com.tw/index.htm)
After you've installed 'MSI Live Update' go to its installation directory. There, you can also find the latest/updated Flash Utilities for more than just motherboards.

-It's typically best to flash BIOS files in DOS. (FreeDOS, Win9X-BootDisk, ...)

-To just build a BIOS update from a (plain) Phoenix BIOS (in notebooks/servers) you cannot use the FLASH utilities for/from AMI/Award/Phoenix-Award BIOS in most cases. So you need 'Phoenix WinPhlash'. Though it is not that easy to just build a backup from a Phoenix BIOS with WinPhlash, as it seems to be a kind of hidden feature.

Follow the steps below:

1. Download Phoenix WinPhlash

2. If the notebook/mainboard manufacturer does not have any BIOS update you can download an alternate BIOS file (with the same size; 256 KB / 512KB / 1MB) for example visit: "www.acer.com" and download a BIOS file/update for their notebooks.

3. Load the BIOS file (*.wph, *.rom) in Phoenix WinPhlash and choose Backup BIOS only.

4. Select: Advanced settings. Then deselect all check boxes and press OK.

5. Now press: the Backup BIOS button.

-Generally, Phoenix BIOS's can't be backed up with Phoenix 'WinPhlash'. In 'WinPhlash' an original/alternate BIOS file is necessary to backup the BIOS. It is important to select "Backup BIOS Only"

-EPROMS (erasable programmable read-only memory) was used on "old" mainboards. They just could/can be erased by exposing them to strong UV light. After this you was able to program the EPROM again, but a programmer was necessary.

-When the mainboard/notebook industry becomes faster and faster then more and more (small) bugs in BIOS-codes appear because the mainboard manufacturers were pressed of time.

-A better solution to store and FLASH a BIOS (code) was necessary,
so EEPROMS was (developed and) introduced and used on more and more mainboards. However, you cannot program certain areas, you must program the whole EEPROM in one loop/cycle.

-So a better kind of memory was necessary and the FLASHROM was introduced. The FLASHROM does not need a whole programming/FLASH cycle if you just want to exchange data in certain areas.

-On many and new Intel / HP computers BIOS updates just consist of certain updated BIOS modules. FLASHROM technology makes it possible to update just the certain areas in the FLASHROM which "need" an update.

-Today, the most and new mainboards use FLASHROMs to store the BIOS data.

-Award hasn't existed since September 1998. Phoenix technologies bought Award.

-MicroID's MRBIOS does not exist anymore aswell. However it has a really great and user-friendly BIOS Setup.

-If you still want to get original documents, datasheets or information about Award and its products/BIOS development Kits you can visit:
http://web.archive.org

Edited for spelling, grammar and layout by Spinner.

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Borg Number One edited : 23 Mar 2005 at 12:40am .

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BIOS FLASHING GUIDES/FAQ's

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