Question about ASUS P5B Deluxe Motherboard

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Asus P5B bios up-date gone bad

I used the Asus utility embedded in windows to flash the bios to upgrade it.But it erased the bios 100% then it wrote the new bios 100% and it verified 6% then offered to do the whole process I cannot boot my computer. I tried the Asus CD and the diskette with the new bios file renamed p5b.rom but my computer reads the cd for a few seconds and nothing shows on the screen. What can I do? Help please! JC

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  • jeanclau Jan 09, 2008

    Hello again, I was using version 1202 of the ASUS BIOS. I tried some older version on the USB device but I always have the same computer does NOT do the POST and it will not read either on the USB device or on the diskette. It reads the CD for a few seconds and then stops doing anything. I'm using a second computer but it cannot burn a CD. So I will try to burn one tomorrow at case my computer could read the rom file from it. If you hear of a place for the USB kit...let me know in any case. Thanks but so far no luck Regards JC

  • jeanclau Jan 09, 2008

    Thanks for all your help. I returned the mobo to Asus tonight. JC



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What version BIOS was it previously, and what version were you trying to update it to?

If you were trying to do 1102 and up, and the previous version was 7.09.02 or below, this is the problem. Any of the versions 1102 or above do NOT support version rollback.

My best advice is to download 7.09.02, and see it at least gets you back up and running. If it works, then go for 1102, and then 1803.

Good luck!

Posted on Jan 08, 2008

  • brian c
    brian c Jan 09, 2008

    Thats one problem with anything higher than 1102, is you cant reflash to a lower version in the event of a problem.

    If it wont even boot from floppy, you may have bricked it.

    If it WILL boot from cd, make sure you burn it as a bootable cd (but i'm sure you already know that).

    It baffles me as to why it will boot from cd, but not the floppy... are you trying to use a usb floppy drive, or the standard internal floppy?


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That Flash EEPROM in a socket (so it can be removed) or is it fixed to the board. Either way, look on the Internet for someone who can write Bios for you. They'll tell you what they require, like Board, Bios, Bios Version, then if you have a socket, you can order it and just wait till it received, otherwise you'll be shipping your motherboard out to be reprogrammed.

Look at this too.

You need to be able to reprogram you Bios from another computer. Via some link, like USB, if the Board you have supports that. You'll need a kit. Where do you get one? I do not know.

Posted on Jan 08, 2008


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1 Answer

What are the instructions for flashing BIOS?

Hello use auto detect here to find the right mainboard:

Download asus update, this is the easyest program to upgrade the bios, while windows is running.

Install first asus update:

When the mainboard is found, select download, and select your windows system.
Open the bios folder, and download the latest bios version.
Unzip the bios file.
Run asus update, and select update bios from file, and select the bios file, in the folder you just have downloaded ( the bin file )

Be very carefull when you upgrade the bios, because a power loss will damage the mainboard, while the upgrade process is running.

You also have to setup the bios settings, when the job is done.
You have to select F1 or F2 to enter the settings.

If any doubt download the manual.

Good luck

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I need m2n68-am bios bin file

Hello download here at asus:

Select download and your windows system.

Open the bios file folder.

Click on global for download.

Unzip the file.

Make also sure it`s the right mainboard, because flashing the bios with a wrong one, WILL destroy the mainboard.

Use the asus update utility, to upgrade the bios, while windows is running, for a safe upgrade.

Good luck

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Latest bios for asus p5s

Hello type in the right mainboardd number here:

When you find your mainboard select download and your windows system.
Open the bios folder select the newest bios and click
on global for download.
Any file from the asus site needs to be unziped.
The bios can be upgraded while windows is running by downloading the asus update utility.

Select the right mainboard because flashing the bios with a wrong one will destroy the mainboard.
You also need to setup the bios settings like clock, date, boot, etc. when the job is done.

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I want upgrade bios ga 8simlh rev 1.0,but can not

How to Reflash Motherboard BIOS About updating BIOS... The whole BIOS updating procedure should be treated with extreme caution. If you do not encounter any system instability or bugs with the current BIOS version, we suggest that you keep it. If you determine to flash BIOS, you are taking a personal risk of BIOS flash failure. Please contact your supplier or our distributors/resellers for further remedy in case system crashes unfortunately because of BIOS flash failure. Before you begin... 1. Please make sure the BIOS version you want to flash matches your motherboard model. 2. If your BIOS is flash protected, please do not enable BIOS Flash Protection under Advanced CMOS Setup (AMI BIOS) or Advanced BIOS Features (AWARD BIOS) in BIOS menu. 3. Never interrupt when you BIOS is being updated. 4. Because BIOS flashing is potentially risky, if you do not encounter problems using the current version of BIOS, it is recommended that you not flash the BIOS. To flash the BIOS, do it with caution. Inadequate BIOS flashing may result in system malfunction. Three BIOS Flash Utilities... We provide three BIOS flash utilities at our website. Below are the overviews. 1 : flashbios_qflash.gif A BIOS flash utility embedded in Flash ROM. Not all motherboards have the Q-Flash, please use @BIOS or DOS flash utility to update BIOS if your motherboard does not have Q-Flash. Features-- With this utility, you only have to stay in the BIOS menu when you want to update BIOS. No need to enter DOS or O.S. mode. Caution-- Make sure you have a functional floppy disk with the correct BIOS version for your motherboard. UEFI - Download PDF User Guide pdf.gif Download PDF User Guide pdf.gif 2 : flashbios_atbios.gif A Windows-based BIOS live update utility. Features-- @BIOS helps you search for, download, and then update the latest BIOS in Windows operating system. Caution-- Make sure your O.S. environment is stable. UEFI - Download PDF User Guide pdf.gif Download PDF User Guide pdf.gif 3 : DOS Flash utility Features-- The flash utility is a combination of AMI and AWARD BIOS flash utility. You can use it with both AMI and AWARD BIOS. Caution-- Make sure you have a functional DOS boot disk with the correct BIOS version for your motherboard.

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  • Another option is through the Internet. Launch the utility:

Start > Programs > Asus > ASUSUpdate

Follow the directions.

There is also ASUS EZ Flash.

Make sure that you do have a copy of your current or original BIOS, if you have the CD that came with the MoBo then you are golden.

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You are welcome... you can rate my solution if you like... thanks

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I got it :-)

Damn Asus , it was a hard session ;-)

1. Make an ISO from your original Asus CD denn insert (with isobuster or something) the Bios Firmware 1004 in the main Dir name the file M2N-MX.ROM

2.Burn a Second disc with the 0804 Bios ROM also rename the 0804 Rom to M2N-MX.ROM

3. Go to EZ FLASH with ALT + F2 and then insert the 1004 CD wait till Erasing is ready Then Turn OFF your PC :-) so you crashed the bios thats what you need to run the embeded CrashFRee Tool

4 After you turn your PC on insert the 0804 CD then it flashes the this Rom and we are Happy :-)

mfg Eddi Hope this helps someone

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