https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Tue, 18 Aug 2026 06:56:11 +0000 Tue, 28 May 2019 14:46:49 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=11544 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=11544&PID=63331&title=z390-ultimate-bios-downgrade#63331 Author: ADVenturePO
Subject: 11544
Posted: 28 May 2019 at 2:46pm

Dear ASRock,

The board came with 4.0 BIOS.
I already managed to update BIOS 4.1 due to instabilities.
No, the system Was brand new and it didn't let me update BIOS.
From Windows and from UEFI it says "Invalid file"

Thank you for your answer.

Have a nice day.
Peter]]> Tue, 28 May 2019 14:46:49 +0000 https://forum.asrock.com/forum_posts.asp?TID=11544&PID=63331&title=z390-ultimate-bios-downgrade#63331 https://forum.asrock.com/forum_posts.asp?TID=11544&PID=63328&title=z390-ultimate-bios-downgrade#63328 Author: ASRock_TSD
Subject: 11544
Posted: 28 May 2019 at 10:26am

Dear Peter,

Thank you for choosing ASRock.

It will not able to flash to previous BIOS once upgrading to BIOS P4.00.
Please clear CMOS to load BIOS default and reinstall a clean OS to try.
Note: We don't recommend users to update the BIOS if their system is already running normally.
https://www.asrock.com/MB/Intel/Z390%20Taichi%20Ultimate/index.asp#BIOS

Thank you!
Yours truly,
ASRock TSD]]> Tue, 28 May 2019 10:26:59 +0000 https://forum.asrock.com/forum_posts.asp?TID=11544&PID=63328&title=z390-ultimate-bios-downgrade#63328 https://forum.asrock.com/forum_posts.asp?TID=11544&PID=63279&title=z390-ultimate-bios-downgrade#63279 Author: ADVenturePO
Subject: 11544
Posted: 26 May 2019 at 6:55am

Hello,

I'm a workstation builder.
I make most of my WS on ASROCK.
But now OC on 4.1 and 4.0 BIOS is much more unstable.
I'd like to force downgrade of BIOS to 1.9 which I find best. How can I do it?
Also even id
Cheers.

Peter.]]> Sun, 26 May 2019 06:55:42 +0000 https://forum.asrock.com/forum_posts.asp?TID=11544&PID=63279&title=z390-ultimate-bios-downgrade#63279