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HOWTO: Flash older BIOS on ASUS Z170


elmor
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WARNING: This may cause your system not to start. Use at your own risk.

 

The below procedure allows you to flash an older BIOS on motherboards without USB BIOS Flashback feature. The lack of this feature means there's no simple way to recover if things go wrong.

 

Software required

 

  • UEFITool v0.21.5 Thread Mega
  • Intel Flash Programming Tool for ME 11.0 Hwbot (note that you need to unzip using a software which supports RAR5)

 

Prepare the BIOS file for use with FPT

 

  1. Get the BIOS for your motherboard in CAP format (in this case MAXIMUS-VIII-IMPACT-ASUS-0019.CAP)
  2. Open the CAP file in UEFITool
     
    attachment.php?attachmentid=4741&stc=1&d=1474625874
     
     
  3. Export to ROM (MAXIMUS-VIII-IMPACT-ASUS-0019.ROM)
     
    attachment.php?attachmentid=4742&stc=1&d=1474625874
     

 

 

Using FPT to flash the BIOS on your system

 

  1. Open a command prompt with Administrator rights and navigate to your FPT directory
  2. Flash the BIOS by using the command fpt -bios -f BIOS_FILE.ROM
     
    attachment.php?attachmentid=4743&stc=1&d=1474626666

 

Note: There are DOS/EFI/Win32/Win64 versions, this guide uses the Win64 version.

Edited by elmor
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Hello elmor ia newbie in forum, please help why i cant not use the FPT64 in CMD, they say

 

 

C:\WINDOWS\system32>D:\Flash Programming Tool\WINDOWS64>FPTW64 -bios Z170I-PRO-GAMING-ASUS-0403.ROM

'D:\Flash' is not recognized as an internal or external command,

operable program or batch file.

 

help me , thanks

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i cant use FPT in CMD

 

C:\WINDOWS\system32>D:\Flash Programming Tool\WINDOWS64>FPTW64 -bios Z170I-PRO-GAMING-ASUS-0403.ROM

'D:\Flash' is not recognized as an internal or external command,

operable program or batch file.

 

 

Thanks

 

copy the files in \Intel ME System Tools v11.0 r1\Intel ME System Tools v11.0 r1\Flash Programming Tool\WINDOWS64 to the location of the ROM file and then run the cmd commands

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Hi Elmor.

 

i tried to reflash my M8I from 3201 to 019 with FPTW64 under WIN 10 but i got the following message: "failed to disable write protection for BIOS space"

 

any solution for ?

 

On Maximus VIII just use USB BIOS Flashback feature.

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