Secure Flash Check Fail on Z690 Extreme
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=112746
Printed Date: 24 Jun 2025 at 8:45pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Secure Flash Check Fail on Z690 Extreme
Posted By: simian
Subject: Secure Flash Check Fail on Z690 Extreme
Date Posted: 23 Jun 2025 at 11:31pm
I'm trying to update my ASRock Z690 Extreme WiFi 6E motherboard's BIOS from 7.03 to the current version, 20.02, but the built-in Instant Flash utility keeps giving me the dreaded "Secure Flash Check Fail".
Suggestions?
Do I need to upgrade to an intermediate version first?
(Of course I followed the instructions or I wouldn't have even gotten that far. And I've seen mentions of things like trying a smaller than 8 GB drive, but my thumb drive is 1 GB.)
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Replies:
Posted By: Gilvonet
Date Posted: 24 Jun 2025 at 1:44am
Hi there,
Let me start by letting you know that english is not my first or second language so bear with me.
1.- Download 3 or 4 previous versions above your currently running version and below the latest version.
2.- Start flashing your UEFI chip from the eldest version.
3.- If you get the same problem where you get the aforementioned error that means that the files you downloaded are getting corrupted therefore not passing the correct checksum.
4.- Keep flashing your UEFI until you are able to flash to the latest version or find out if you are getting the same error.
5.- Things to consider:
As you flash new versions the POST times are extended and the computer might reboot several times before booting into your operating system.
If you get the same error in all of the downloaded versions, that means that something is corrupting your downloaded files and not passing checksum verifications.
You can always check the files with a checksum calculator, I strongly recommend a local calculator and not online.
Checking MDA/SHA on Linux is super easy, on most distros all you have to do is right click the file.
You can always download the UEFI files in a different computer and using a different flash drive in case the computer you are using is infected or something is injecting code into your downloaded files.
I strongly suggest using 7zip to decompress zipped UEFI files, it has a built-in checksum calculator.
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Posted By: Gilvonet
Date Posted: 24 Jun 2025 at 1:51am
Ah! I almost forgot:
Always you do this first before flashing any UEFI/BIOS/ROM
Save your current UEFI settings in an external source and always reset the UEFI back to factory defaults before flashing.
Best Wishes.
Gilvonet EEng. MCS.
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Posted By: simian
Date Posted: 24 Jun 2025 at 7:13am
Thanks for the suggestions. Before trying them, on a whim, I tried the 'press F6' startup option to go directly to the Instant Flash utility. Previously I was trying the 'press F2' option to go to the UEFI setup and then navigating to the Instant Flash from there.
Why it would make any difference, I don't know, but the F6 method worked! It did not give me any errors and I was able to upgrade directly to the 20.02 BIOS.
I hope this helps someone else in the future.
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