https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Wed, 22 Apr 2026 18:38:37 +0000 Thu, 05 Sep 2019 19:11:55 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=12377 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=12377&PID=67575&title=b450hdv-r4-0-downgrade-bios-cant-boot#67575 Author: Xaltar
Subject: 12377
Posted: 05 Sep 2019 at 7:11pm

Do not attempt to flash backwards, it could brick your system. Flash up to 3.20,
that should resolve the M.2 issue. I am assuming you are using a first or second
gen Ryzen CPU and avoided 3.20 because of the warning. You shouldn't have updated
to 3.xx if you were not using a Ryzen 3000 CPU, we see this on the forums every
time there is a new Ryzen launch, unstable/buggy early BIOS versions get
flashed by people who don't need them.

If 3.20 does not fix your issue you will need to contact ASRock Tech Support:
https://event.asrock.com/tsd.asp

I suspect that 3.20 should sort you out though
Never update your BIOS on AM4 when a new CPU lineup has just launched unless
you are using one of those CPUs, it is always a recipe for disaster ]]> Thu, 05 Sep 2019 19:11:55 +0000 https://forum.asrock.com/forum_posts.asp?TID=12377&PID=67575&title=b450hdv-r4-0-downgrade-bios-cant-boot#67575 https://forum.asrock.com/forum_posts.asp?TID=12377&PID=67571&title=b450hdv-r4-0-downgrade-bios-cant-boot#67571 Author: pao3007
Subject: 12377
Posted: 05 Sep 2019 at 4:03pm

Hi, i recently updated BIOS from P1.0 to P1.50 and then to P3.10, but after flashing to P3.10 I cant boot to WIN10, that would be fine but Im stucked at black screen, so I cant even access BIOS, only way to access BIOS is to remove my M.2 SSD...I know that ( https://www.asrock.com/MB/AMD/B450M-HDV%20R4.0/index.asp#BIOS ) It says that I m not able to flash previous BIOSes but I need to try flashing it...

M.2 SSD is working, was tested in another PC
Ultra M.2 slot on motherboard is working too, was tested with NVMe M.2 SSD and I booted to WIN10
]]> Thu, 05 Sep 2019 16:03:58 +0000 https://forum.asrock.com/forum_posts.asp?TID=12377&PID=67571&title=b450hdv-r4-0-downgrade-bios-cant-boot#67571