deutsch 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

Einträge: 25

lonove 6.Feb.2024 19:15

hello sir i need to Bios Flash software

nehdi 29.Dec.2022 19:38

dell laptitude bios regler temp mise a jour

Triệu Thế Anh 23.Dec.2019 03:46

Help me! i have a laptop that has locked booting functions in bios. And bios is set a password without remembering. how to reinstall bios from usb

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!"

Bill Meyer 15.Oct.2013 15:24

A warning on your webpage. Total size of your Dos and Bios files no greater than 2.77 Mb before burning to DVD/CD. I assume the data is corrupted? Can you explain in more detail.

kennywally 22.Jun.2013 00:52

Me and my BIG IDEAS....too bad I found you after the fact, the unit was running smoothly....but I updated anyways [ with the hopes I could up the RAM to 16 ] of course, I was wrong, the computer still worked fine for a few hours, then I got a microsoft warning, to copy files, hdd failure immenent or similar type warning. I ran iobit hdd check, found nothing, went into properties to do a disk check upong reboot and fix the black screen, no bootable device detected, insert boot disk, hit any key. and that was last I am still effin around with this thing. So it appears I need to revert the BIOS...I had no backup plan and had no idea how dangerous this was.

biosflash 20.Nov.2012 06:27


rueben 20.Nov.2012 04:21

does this work with forgotten passwords?

norman 18.Nov.2012 22:57

Hi, i have a HP Compaq nc6220, that has trouble booting from the HDD. Also having trouble getting into the bios screen. I need to update the bios using cd, or usb but im having trouble locating the file to do this, can you help. Thanks

claire 26.Aug.2012 01:22

I'm having difficulty. I have a salvages older gateway that had windows on it. I have put ubuntu on it more windows. all the articles are for windows. although gateway did use a windows format what do i use for linux with a bootable cd? BTW I have no more recognized bootable harddrive.( if that is necessary)

toxikomx 17.Mar.2012 02:02

sorry, i cant read the bios numbers, the only thing that i can read is ((Award Bios 1998/PCI-PNP ROM)).. this pc is very old and slow. im trying to overclock it. maybe i cant have a good pc.. im poor man. shit!