How To USB BIOS Flash MSI B450 Pro Carbon MAX Wifi Without CPU

[@mikesunboxing]

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[@rickh8380]

Great information and detailed how to as always from the Dynamic Duo. Truth be told. Flashing a BIOS is probably my most dreaded thing to do on a motherboard or a fully assembled system. Thanks for making it look easy. Take care. Cheers

[@Senrab46]

Never tire of watching these videos. So many ppl report on discord issues, i do wonder if they take the time to watch videos like this! Your tutorials take the stress out of these updates with concise steps to follow. Thanks Mike and Kath as always👍

[@mikesunboxing]

thanks Nick appreciate it

[@tombstone5100]

Thanks for your video. I was just given an msi b450 gaming pro carbon ac. I have not built a new computer for 8 years and this is my first modern AMD. Read the specs and support information from msi, confirmed the board supports ryzen 5 5600x and the ram I bought. But installed the ram and cpu and poof, nothing happened. No post, no video etc. Scratching my head and then remembered in my early days of building computers, (floppy drives for bios flash) that sometimes a bios update is issued for cpus etc that are developed after the board was released. Proof that I learned something new today, thanks to your video. I will research my board and I already confirmed it has this capability. Last time I had to do anything like this I had to go dumpster diving to find an older cpu to make the board work, so I could use a floppy to install the bios. Old dog grateful for new tricks and guidance. Cheers from Canada! Subscribed whether it works or not.

[@mikesunboxing]

hope it all works out for you and thanks for the sub, any problems, get in touch

[@tombstone5100]

@@mikesunboxing It worked like a charm! Magic! I owe you a pint if I ever make it to the UK again.

[@mikesunboxing]

@@tombstone5100 Glad it went well 🙂

[@saoggo8948]

thank you so much I watched 5 different videos and yours is the only one that worked I was really about to buy a new motherboard thank you so much, I'm, so glad I'm subscribed

[@mikesunboxing]

thanks for the sub my friend

[@michaelthompson9798]

As a general PSA ….. if your bios flashing older motherboards (older than a few years) it’s better to find low capacity usb thumb drives (2,4,8 GB storage) as these read much easier and more likely than 16 and 32GB modern thumb drives. Older bios’s generally don’t like like high capacity thumb drives for some reason. I personally have a couple 2GB and one 4GB for this very reason….. even certain pc tools such as MemTest (testing pc memory for errors) work better on small capacity thumb drives as well.

[@mikesunboxing]

very good shout

[@michaelthompson9798]

Not my mobo but for the algorithm Mike 💪🥰. Love your work ✊😆

[@mikesunboxing]

lol thanks Michael

[@franky3923]

THIS save me loads of time, and all the extra stress to deal with a failed upgrade. I have it working now, and this is TWO things that tripped me up in the process: First, is that I tried 2 different USB with the latest BIOS but LED flashed than stay solid. Only worked when I download the 2nd latest version, it ran the first time. Second, after the red light flashing for a few minutes, red LED light is gone, it restarted and kept all the fans running at MAX speed. Not sure if the update is done or not, finally hold power button to shut it down after a good 10 minutes. And after the restart, the boot stuck on BIOS and windows won't run... switched to CSM and manually selecting boot drive solved it, window loaded and everything works fine.

[@guillepgpm]

Doesn't work on latest beta BIOS. Build has to be stable. MSI B450 Gaming Plus.

[@uglybob7505]

I'll be upgrading me old 3600 to a 5600X soon so I'll have to do a BIOS flash for me B450 Aorus Elite. Always makes me nervous but seeing videos like this takes away a bit of the panic :) Thanks Mike and Kath.

[@mikesunboxing]

nice! If you need any help or are passing drop in and i'll do it for you

[@patricklebel1141]

@@mikesunboxing on video with Ugly Bob taking notes....

[@sol-hb8zg]

Good luck! I updated the bios on my ASUS x470 via a usb like this method and worked perfectly!

[@mikesunboxing]

@@patricklebel1141 Lol!

[@mikesunboxing]

@@sol-hb8zg Glad to hear that! 🙂

[@OlettaLiano]

Hi, Mike. This video reminded me that I haven't updated my BIOS in nearly two years. So, I think this is a good time to do it. I had Windows 11 installed for about two months and got sick of it. So I did a diskpart on my boot drive and reinstalled Windows 10. A fresh OS deserves a fresh Bios. LOL.

[@mikesunboxing]

go on give it a treat

[@D_8KEN]

Very useful at the moment with the recent wave of msi flashing struggles we've seen on discord!

[@mikesunboxing]

Yes it is that time again

[@randomstuffnothingelse]

Thank you I’m gonna try this tomorrow hopefully it works

[@mikesunboxing]

Good luck!

[@PaulBakewell]

Yes I always use SanDisk drive never had a problem with them. Great video thanks Mike.

[@mikesunboxing]

sandisk work well for me

[@franckgilbertsapin225]

Thanks you sir for the information (in French Merci monsieur pour l’information 😉) 👌

[@mikesunboxing]

bonjour!

[@yincarloshernandez8572]

Thank you, your video was very helpful, especially when we have same boards, un crack ❤❤❤

[@WickedRibbon]

Hi Mike, slightly tangential question. Have you encountered any issues with the latest AGESA version for B450 motherboards (Version 1.2.0.7)? I've noticed a few threads on reddit complaining of RAM issues post-update, where their PC wont boot if the RAM is left at standard XMP settings. The only fix seems to be dropping below XMP speeds, which obviously isn't ideal for Ryzen. I haven't updated my B450 Tomahawk Max BIOS in ages, so seeing these reports was quite alarming. Now I'm not sure if I should? (currently on 7C02v35, dated 2019-11-11) I don't want to post a direct link to the reddit thread here just in case my comment gets auto-moderated, but the thread title is : " RAM Issues depending on AGESA version (1.2.0. 5 to 1.2.0.7) ", in case you'd like to check it out. If you have the time, any insight would be much appreciated!

[@mikesunboxing]

not had any issues here and hade a few b450s recently so no i can't say that i have noticed this happening

[@WilliamAndrewPhilipBodie]

Mike's How to is Worthy of a Support comment. Like & a share 🙂

[@mikesunboxing]

thanks William

[@shortbusKoz]

Hello I was wondering what size/amount of of storage should the usb thumb stick drive should I get for bios flash update

[@mikesunboxing]

That is covered in the video in some depth

[@hocemboualleg623]

Im so so so grateful thank you soooo much omggg

[@mikesunboxing]

No problem 😊

[@firage_bzz]

Hello, for people like me that spent 3 hours wondering why my update didn't work, it was a beta version, and was not compatible with my motherboard and it's current BIOS. So taking the latest non beta release fixed my problem.

[@mikesunboxing]

glad you got there in the end

[@billchildress9756]

I had to flash my bios on my msi x570 gaming plus before I could use my 5800x3d. It was easy!

[@geegee3702]

Sir, i think its fixed. My problem was no video on a new b550 aorus elite v2. I try the update thing from other videos and didnt work, until i found you. I have to build the pc again because in order to see wtf was happening i just disconnected everything, but i got a hopeful video signal that said "pls bro, connect the 8pin power to this gpu or get the fk out" I was very happy to see this first interaction with this new motherboard after 10 or more hours of hopeless trys. Thank you bro, i was not going to sleep tonight but you save me.

[@mikesunboxing]

glad it helped

[@AzNightmare]

*I read you can also do this by using M-Flash from the MSI Bios. It may be a bit easier as it seems like you'll have your monitor plugged in and be able to see an update progress bar.*

[@mikesunboxing]

you can if you are able to access the bios to begin with, a lot of people are updating because their CPU is not supported

[@AzNightmare]

​@@mikesunboxing *I see, that makes sense. In my situation, I'm updating from a Ryzen 5 3600 to a Ryzen 7 5700X. I think I should be able to just update the bios with M-Flash with the 3600 cpu in first, right?*

[@mikesunboxing]

@@AzNightmare Update with M flash using the old CPU and when you're happy it has flashed then put in the new CPU

[@AzNightmare]

@@mikesunboxing *Thanks for the advice!*

[@ccoe3237]

I know why it took longer than usual. The CMOS reset results in the BIOS re-learning some internal settings so takes a little longer.

[@mikesunboxing]

that makes a lot of sense

[@kristinebryson2701]

i tryed flash it earler with flash drive scan disk notthing bought from walmart waiting for it update flash button so left it alone for 3 hours and nothing fan did not come on at all no lights on board except bios flash button was still flashing so i changed to differnet flash dirve ativa and that one worked fan did not come on it stoped flashing so with me leaving board on for 3 hours waiting is the board ok or should i return it thank you

[@Koitenshi]

Mine loads for like 1 to 2 minutes and than just stops loading from the USB stick and Flashes Soild Red?

[@mikesunboxing]

that means it cant read the USB or the file name

[@HieiKirisame]

Can you flash to go back to a Ryzen 2700x? I flashed this mobo to use a 5800x3d. Now I need a newer mobo to upgrade storage and the 2 m.2 slots on this board won't be able to handle 2 PCIE 3x4. I'll likely repurpose this carbon to run as a dedicated streaming PC in a dual setup.

[@mikesunboxing]

it should still be supported with the newer bios you have

[@UltraGameWorld]

Thanks for this helpful video Mike! I have a B450 Tomahawk MAX motherboard does the BIOS flashback still work the same as this guide do you know?

[@mikesunboxing]

Should be the same principle just get the right file

[@Everything-zk3mk]

Does this work with downgrading bios I updated my bios because I was upgrading from a AMD 2600 to a AMD 5800x3d I have a msi b450 pro carbon ac and I updated to the latest bios ever since then my system hasn't been the same like the Ethernet connection is bad to the point I have to disable it and stick to wifi which has continued even after putting in the 5800x3d so I was wondering should I downgrade or reinstall most recent bios with the new cpu

[@mikesunboxing]

Yes it will update whatever is on the drive

[@lotfidrihem2435]

What happens if you do not update bios and put the processor and all the parts and turn on the computer, will it work?

[@mikesunboxing]

no it won't if the bios can't recognise the CPU

[@giannisgeroulis6880]

Very helpful video, but im in a situation that after 3 slow flashes the red light stays on forever.

[@mikesunboxing]

that means the file is wrong or can't be read

[@giannisgeroulis6880]

@@mikesunboxing I have tried the latest and the previous driver file and I also rename it in MSI.rom and for last I ve tried 2 different usb.. any other ideas or I must look for new mb? Thank you for the help btw

[@mikesunboxing]

@@giannisgeroulis6880 This is maybe easier to fix or at least advise if we can ask more questions and get direct answers, so feel free to join our Discord chat and we can go over it in more detail discord.gg/XtBTGQ6BDu Agree to the rules by clicking the emoji and you will get access to the rest of the Discord channels

[@sneakypanda6631]

After it flash, can I change the cpu for the upgrade of 5000 series?

[@sneakypanda6631]

Never mind you said it lol.

[@mikesunboxing]

yep

[@grabinoioshanibal9310]

What should i do when my board is already flashing for 1h ?? Pls help . I mentioned when you renamed the file to msi.rom you had No uppercase letters , mine is like MSI.ROM can that be the problem ? And how can i safely shut down the bios flashing process when its still blinking ?

[@mikesunboxing]

yes it is stuck trying to read the file

[@alyssamariegime1289]

how to q flash on Aorus B450 Pro Wifi? thanks in advance.

[@mikesunboxing]

same method as here , but different bios file kzbin.info/www/bejne/d3OxmH-obL6bisU

[@saoggo8948]

what if you let the cpu in while it updates

[@mikesunboxing]

should be okay

[@Jake.filmz_]

Bios flashback light didn’t even come on

[@mikesunboxing]

This is maybe easier to fix or at least advise if we can ask more questions and get direct answers, so feel free to join our Discord chat and we can go over it in more detail discord.gg/XtBTGQ6BDu Agree to the rules by clicking the emoji and you will get access to the rest of the Discord channels

[@g.waits4gainz205]

tyty

[@mikesunboxing]

glad it helped

[@AhmedAli-px4jy]

msi b450 gaming pro carbon max wifi np power

[@mikesunboxing]

This is maybe easier to fix or at least advise if we can ask more questions and get direct answers, so feel free to join our Discord chat and we can go over it in more detail discord.gg/XtBTGQ6BDu Agree to the rules by clicking the emoji and you will get access to the rest of the Discord channels