AB350 pro4 bios update
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=25325
Printed Date: 18 Jul 2025 at 9:06am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: AB350 pro4 bios update
Posted By: Bios man
Subject: AB350 pro4 bios update
Date Posted: 07 Jan 2023 at 7:05am
Hello. I have a really early version of this board, so I can't update it through the normal ways inside the BIOS, but I contacted Asrock and got a neat guide on how to do it and even the file. Then of course I have done something wrong cause I can't get it to work.
here is the steps I have done and where it goes wrong:
1: formated usb stick to fat32 and put the files I was sent on it.
2: boot into efi shell.
3:type"fs0:
4: type "cd AB350_Pro4" This is where it goes wrong. No such file or directory.
5. tried fs 1 through 8 (all the ones I have) with same result. Nothing found.
6: tried different USB ports. USB 2 and 3.
Some more info that might be relevant:
usb stick shows up in the boot list and has UEFI prefix.
I'm not an IT guy so I'm just doing my best following instructions, but I must have got it wrong at some point.
Maybe someone here has any ideas?
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Replies:
Posted By: Bios man
Date Posted: 07 Jan 2023 at 7:23am
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One more small thing. I tried renaming the folder to something very simple just in case there was something about my spelling or something.
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Posted By: eccential
Date Posted: 08 Jan 2023 at 8:27pm
You'll want to use "map" command in the EFI shell to see the actual device names, as they don't necessarily have to be fs<num>. They can be blk<num> or something weird.
map<ENTER>
It should list all the device names and descriptions, and hopefully, your USB drive will be one of them, so you can switch to it.
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Posted By: Bios man
Date Posted: 11 Jan 2023 at 2:24am
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Thank you. I will try this out and report back here. Appreciate the help!
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Posted By: Bios man
Date Posted: 14 Jan 2023 at 9:25am
Solved it. Solution was to rename the folder just to save time typing. Then I needed to go one level deeper to find the file. the way it was packaged was folder called ab350pro4 then inside that was a folder with the same name which had all the files.
Hope that was clear if someone googling comes accros this.
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