[SOLVED] BIOS not flashing on MSI B550m Mortar Wifi ?

Jun 13, 2021
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I bought a MSI B550m Mortar wifi and its not flashing the BIOS after pressing the Flash BIOS button the flash led blinks for 5 secs then remains on constantly and my USB's led stop flashing, i have tried 2 usb's till now, one is a 4gb old one and other is a 32 gb sandisk both formatted to fat 32
 
Solution
I bought a MSI B550m Mortar wifi and its not flashing the BIOS after pressing the Flash BIOS button the flash led blinks for 5 secs then remains on constantly and my USB's led stop flashing, i have tried 2 usb's till now, one is a 4gb old one and other is a 32 gb sandisk both formatted to fat 32
Probably the best how-to video on using MSI BIOS flashback. He's got several tips for little details that can make a flash unsuccessful if you get it wrong. He's on a different MSI board but it should work the same for yours.

View: https://www.youtube.com/watch?v=mwyQ0Sfz_aw

Colif

Win 11 Master
Moderator
the light stopping sounds right

Updating BIOS with Flash BIOS Button
  1. Please download the latest BIOS file that matches your motherboard model from the MSI® website.
  2. Rename the BIOS file to MSI.ROM, and save it to the root of your USB flash drive.
  3. Connect the power supply to CPU_PWR1 and ATX_PWR1. (No need to install CPU and memory.)
  4. Plug the USB flash drive that contains the MSI.ROM file into the Flash BIOS Port on the rear I/O panel.
  5. Press the Flash BIOS Button to flash BIOS, and the LED starts flashing.
  6. The LED will be turned off when the process is completed.

page 48 - https://download.msi.com/archive/mnu_exe/mb/E7C94v1.2.pdf

are you sure its not flashing it?
 
I bought a MSI B550m Mortar wifi and its not flashing the BIOS after pressing the Flash BIOS button the flash led blinks for 5 secs then remains on constantly and my USB's led stop flashing, i have tried 2 usb's till now, one is a 4gb old one and other is a 32 gb sandisk both formatted to fat 32
Probably the best how-to video on using MSI BIOS flashback. He's got several tips for little details that can make a flash unsuccessful if you get it wrong. He's on a different MSI board but it should work the same for yours.

View: https://www.youtube.com/watch?v=mwyQ0Sfz_aw
 
Solution