Windows, DOS or per BIOS-Setup?
Please note: a BIOS update is not safe! I read often in forums something like: I've done dozens of times on Windows a BIOS update and never see what happens. You're lucky! Because a survey on BIOSFLASH has shown a completely different result. After that most accidents happen (to ~ 75%) clearly under Windows - which I think is not too surprising!
The timing to program an IC is extremely important, because bytes are programmed in nano- or microseconds cycles onto the chip. If your OS, or an installed software freezes or has a blackout - e.g. while your E-Mail client receiving new E-Mails, or your AV software is starting a virus scan, or your OS is installing a new update in the background - then the BIOS-Chip is programmed incorrectly and nothing works after a reboot.
- First choice: BIOS-Update with built-in BIOS Flash tool
Mainboard manufacturers like e.g. ASUS, ASROCK, GIGABYTE and MSI have integrated in many mainboard models a Flashtool inside the BIOS-Setup (EZ-Flash, Instant-Flash, Q-Flash, or M-Flash). The usage is very simple: you have to purchase the BIOS file from the mainboard/notebook/brand PC manufacturer website. Copy the BIOS file onto a FAT16/FAT32 formatted USB-Stick, a formatted Diskette, or onto a CD. Start the Flashtool, choose the drive where the BIOS file is stored, and follow the instructions. Remember: it's a good idea to take a look into the mainboard manual or other readme/help files from your manufacturer!
See: Manufacturer links
- Second choice: BIOS-Update per bootable USB-Stick (DOS)
Instead of using a CD or Diskette, an USB-Stick has some essential advantages: it is easy to format a pendrive and making it bootable. Also there is no size limitation like on a diskette. And primarily: the pendrive is rewriteable, which is important if you intend to backup your current installed BIOS version before making the update. Remember: it's a good idea to take a look into the mainboard manual or other readme/help files from your manufacturer!
See: How to create a bootable USB-Stick
- BIOS-Update per bootable CD (DOS)
The CD simulates (emulates) a floppy drive on boot. Due to the size limitation of the 2.88MB floppy disk, you can use only a BIOS file and a flash program, when both file sizes are less than ~ 2.7MB! Remember: it's a good idea to take a look into the mainboard manual or other readme/help files from your manufacturer!
See: How to create a Boot-CD
- BIOS-Update per bootable Diskette (DOS)
Due to the size limitation of the 1.44MB floppy disk, you can use only a BIOS file and a flash program, when both file sizes are less than ~ 1.2MB! Make sure to use a perfect Diskette without any errors! Remember: it's a good idea to take a look into the mainboard manual or other readme/help files from your manufacturer!
See: How to create a Boot-Diskette
- BIOS-Update per Windows software
Are you sure? OK, it's your risk. You have to purchase the BIOS file and the Windows flash utility from the mainboard/notebook/brand PC manufacturer website. Start the utility and follow the instructions. Remember: it's a good idea to take a look into the mainboard manual or other readme/help files from your manufacturer!
See: Manufacturer links
- The safest solution: BIOS-Update per Replacement chip
On BIOSFLASH.COM you can purchase all common BIOS-Chips, programmed with your desired BIOS version for a small prize. So you don't have to make a risky BIOS update by yourself, which could damage your PC, and you have a second BIOS-Chip in reserve for later experiments or if you want to try an update by your own.
See: BIOS-Chip order form
Read more...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 guarentee 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.
sofiene 21.Aug.2018 15:51
Hi i have a Dell precision T1650 that i'm facing some problems with In fact it all started when the bios wouldn't recognize all my Ram so i tried to change the rams but no success.When i try 2 slots it's recognizing the full memory and when i use the 4 slots is recognizing only 2 slots. so i tried to update the bios may be that was the problem but the bios this time won't update. I tried windows executable and dos method but no success the update procedure starts and when it reboots to execute the update nothing happens i think changing the bios chip can be my last option what do you think? and which bios chip should i buy for my desktop motherboard Thanks in advance
biosflash 5.Oct.2013 14:31
Read the product website: http://www.asrock.com/mb/download.asp?Model=K7S41GX&o=BIOS
Cristian Dumitrescu 5.Oct.2013 14:17
Hey all! Any idea how I'm doing a bios update (ASROCK K7S4GX)! if you can send me some photos to your e-mail to me I would be grateful and indebted. firstname.lastname@example.org Thanks!
Will 27.Dec.2011 14:39
Thanks for writing such an easy-to-understand atrcile on this topic.
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BIOS Beeps BIOS Boot CD BIOS Boot Diskette BIOS Boot Logo BIOS Boot USB Stick BIOS Chip installation removal Programming BIOS Chip Type list CMOS Reset BIOS ID BIOS Passwords BIOS Software Tools 3. Start the BIOS Update 4. BIOS Update failed? BIOS Update Howto BIOS Update HowTo 2. Choose BIOS Update method 1. Preparation BIOS Updates, Drivers, Manuals, etc. Online Shop
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