https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 04 Apr 2026 10:02:30 +0000 Sat, 09 Nov 2019 02:08:23 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=12834 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=12834&PID=69787&title=downgrade-bios-version#69787 Author: SiRoCu
Subject: 12834
Posted: 09 Nov 2019 at 2:08am

I have solved the problem. By downloading the BIOS 4.10 to install over 4.20.

The question was posted because on the webpage to download 4.20 it says "* User will not able to flash to previous BIOS once upgrading to this BIOS version." that is a reason.

However the job has done the performance is rise up and never saw random BSOD again.
Well, the next Z390 mobo I design to use Msi MEG Z390 ACE its rock solid mobo and it provides many good advices look at my VGA card.

Good Bye ]]> Sat, 09 Nov 2019 02:08:23 +0000 https://forum.asrock.com/forum_posts.asp?TID=12834&PID=69787&title=downgrade-bios-version#69787 https://forum.asrock.com/forum_posts.asp?TID=12834&PID=69780&title=downgrade-bios-version#69780 Author: SiRoCu
Subject: 12834
Posted: 08 Nov 2019 at 6:19pm

Can I downgrade BIOS version 4.20 (just upgrade yesterday night) to 4.10 ?

My mobo is ASRock Fatality Z370 Gaming K6(with my old i7-8700K). When 8700K die I got the new i9-9900K and take my mobo to the shop for upgrad BIOS to 4.10 and use it with i9-9900K for 1 week and I try OC 5.0GHz for stable and works at a certain level but Vcore so high (5.0GHz with 1.39V) I try to find the best and yesterday night just found the new BIOS from this site, then I upgrade it and hope it help me. But when upgraded to 4.20 the system not stable RANDOM BSOD and the performance is drop, for stability I must rise up Vcore and the temp too high. Be4 upgrade test on Cenibench R15 got score 2179 when after 4.20 got score 20xx. The main problem is random BSOD.

Can I and How can I downgrade from 4.20 to 4.10 ?

Thank you
Siwa Runwat

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