BIOS-Update Howto

Step by step to a successful BIOS-Update

BIOS-Update Howto - Step by step to a successful BIOS-Update

Never touch a running system!

This golden rule has its reason and says simply:
Don't update the BIOS when your PC is running smoothly!

Only when your BIOS has serious bugs, or newly built hardware such as CPU, RAM, hard drive, etc. is not detected, then a BIOS update should be considered. On the following pages you will find a step-by-step instruction how to update the BIOS.



 1. Preparation - Create a safe environment for a BIOS-Update
 2. Choose BIOS-Update method - DOS, Windows or per BIOS-Setup?
 3. Start the BIOS-Update - Flash your BIOS chip
 4. BIOS Update failed? - First aid


Attention: this Howto describes only a BIOS update according to standard, how it should work on most mainboards with AMI-BIOS, AWARD-BIOS or PHOENIX-BIOS. I cannot guarantee that it will work on your PC and I assume no liability for any damages! Please read the README files from your Mainboard manufacturer or PC manufacturer.

User-Comments: BIOS-Update Howto
aliou 14.May.2017 19:39

je trouve tres bon

biosflash 28.Mar.2017 14:18

You have to use windows to update your laptop, if lenovo do not supply one for DOS.

vijayan 28.Mar.2017 14:09

i want to flash bios in lenovo laptop e4325 model..but i couldnt flash cause of compatibility issues and also there is no file available in net in the form of dos based updation file..only there is bios update utility for to make it..please explain in detail.thank u with hope..i am expecting the reply from anyone..

Dark sun 8.Mar.2016 01:39

My Hp laptop BIOS corrupted and my laptop was not power on only light blinking. what should I do now?

TEMBU 22.Nov.2015 04:38

Hi, i have a HP labtop win 8, that has trouble booting from the HDD. Also having trouble getting into the bios screen.when function key is pressed e.g F9 change boot device order ,appears on the lover screen and will not proceed.same with other function keys. i need your help . Thanks

Cesar 10.Apr.2015 16:02

I need ROM file Mercury KOB 740 CFDMx

GIMINI 15.Dec.2014 16:17

My Hp laptop BIOS corrupted and my laptop was not power on only light blinking i follow this post and now its working might help someone or at least give you some idea cheers

biosflash 3.Jan.2014 12:04

@lee johnson
It's a Foxconn mainboard, right? ==>

lee johnson 3.Jan.2014 11:18

hi im trying to find and updated bios for my winfast 6100m2ma fab1.0 version 6.00pg last done on 17/11/2006 any ideas which could help many thanks

biosflash 15.Oct.2013 15:47

@Bill Meyer
quote from webpage: "This method simulates/emulates a floppy drive. Due to the size limitation of a 2.88MB floppy disk, you can only use a BIOS file and flashtool whose total file size is max ~2.7MB!"

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