I've had the USB connected for an hour and a half, but it keeps blinking and won't stop. I don't want to risk it and turn it off. Any solutions, or can I turn it off without any risk?

How long does it normally take?

From what I've seen from multiple sources, the process should have only taken 2-5 minutes.

Should I just let it keep going? The light next to the Flash BIOS USB port is flashing white, which I believe means the installation is in progress, correct?

I figured I had to update the BIOS due to having a Ryzen 7800X3D processor for it, which isn't supported by the original BIOS. I neglected to try booting up before starting the Flash process, though, not considering that the motherboard might have come with more recent drivers.

Is it possible to cancel the process and see if it arrived already-updated? Do I have to just wait it out until it finishes whatever it's doing? Am I reading the flashing light wrong and it's not even actually installing?

I wanted to write about my own experience with updating the BIOS on a MSI motherboard for anyone upgrading to 3rd Gen Ryzen, as the stuff I read online were not very helpful.

My setup is: B450 MSI Tomahawk, Ryzen 5 3600

Download the latest BIOS Version from MSI's website and then copy and paste only the BIOS file to a FAT32 USB Thumbdrive of less than 16GB. Leave the text file alone, don't copy that.

Rename the BIOS file to MSI.ROM

Shut down your PC, unplug the power cord and locate the CMOS Battery, which is a button cell battery. Either short the two pins beside the battery labelled BAT1 for 5 to 10 seconds or remove the battery and wait at least 20 minutes before reinserting.

Don't install the CPU yet. Plug your PC back in and turn it on. If you use the same mobo as me, you should see that the red LED on the top right near the 24 pin ATX connector for the CPU should be lit up.

Plug in your thumbdrive into the BIOS Flashback USB Slot on the back of your mobo then press the small button above it. The red LED on the top LEFT side of the mobo should start flashing. Do not turn off the PC or wiggle the thumbdrive. If the LED flashes for less than 5 seconds, repeat the steps again, you might have done something wrong.

Let the LED Flash. After a while your PC should restart. Switch it off again and install your CPU and the rest of your components.

You should have successfully completed your BIOS update and brought your non-X570 motherboard up to date. Good luck!

hello, I have the b550 a pro motherboard, and I have completely built up my system, I tried to run it and it didn't post which I expected because I am using a ryzen 5 5600x proccessor which needs a bios update. I installed the bios file from msi's official site and I have renamed it to MSI.ROM. I put the flashstick in the correct usb slot, pressed the BIOS button, the red light started flashing and fans started spinning, I waited 10 minutes still flashing, waited 20 minutes still flashing, waited a hour still flashing. I read some things online and people suggest to reset cmos battery which I did after stopping the flash. After I resetted the cmos, than started the BIOS flashback again. It was getting late at night and I decided to sleep while it is still flashing hoping it will end by the time I wake up, I was wrong it still was flashing when I woke up. any suggestions will be greatly appreciated. I hope I haven't bricked my motherboard by accident.

Guys I’m updating the BIOS with the BIOS flash button. I have an MSI MPG B650 EDGE. The LED flashed a few seconds and now it’s been turned on (no flashing, just turned on) for 20 minutes, still hasn’t turned off. Is it normal?

I'm building my first PC in forever. B650m mortar with a 7800X3d. I followed the instructions, have most recent (non beta) BIOS version, and renamed to MSI.ROM. I began flashing the BIOS without any components besides the 24 and 8 pin, and the LED flashed for about 1.5-2 minutes, then shut off, flashed rapidly for about 30 seconds then shut down. The MSI video and most other sources say this process should take about 5 minutes. Should I be concerned, or should I try it again?

Thanks in advance

I'm using a MAG B550 TOMAHAWK. My BIOS is from May 2022.
https://www.msi.com/Motherboard/MAG-B550-TOMAHAWK/support

I see there are several BIOS update since then with a lot focussing on security patching.

I was planning on just using the M-Flash process to update to the latest, but when I read on Google about the process it says:

"Use a BIOS flash method that fully overwrites the existing firmware (e.g., "BIOS Flashback" via USB if your board supports it)."

It says some motherboards just update/layer the BIOS update, and in case your board has been exploited you should use the flashback process.

Does that sound right, or would the normal M-Flash process be fine and remove any prior compromise that may exist?