That motherboard do not have bios flashback feature. Check factory installed bios version on a motherboards barcode if bios update is needed to use that cpu. https://www.asus.com/support/FAQ/1044755 Answer from JNHagis on reddit.com
🌐
Reddit
reddit.com › r/asus › asus prime b550m-a wifi ii bios flashback issue
r/ASUS on Reddit: Asus Prime B550M-A WIFI II bios flashback issue
February 13, 2025 -

I'm thinking of buying the Asus Prime B550M-A WIFI II motherboard for my budget build with the AMD R5 5500GT. I don't know if the BIOS is the latest version and I'm scared that I can't update the BIOS. Any ideas?

🌐
FlashMyBoard
flashmyboard.com › mb › Asus_PRIME_B550M-A_WIFI_II
Asus PRIME B550M-A WIFI II BIOS - Analysis, Alerts & Downloads
January 27, 2026 - The firmware lifecycle for the PRIME B550M-A WIFI II begins with the initial platform release in v0303. Significant architectural maturity is achieved in v2604, which integrates AGESA 1.2.0.6b to enable official support for the Ryzen 7 5800X3D and optimize L3 V-Cache performance.
🌐
Asus
asus.com › motherboards / components › motherboards › prime › prime b550m-a wifi ii
PRIME B550M-A WIFI II|Motherboards|ASUS Global
PRIME B550M-A WIFI II BIOS 3607 · Version 3607 · 15.92 MB · 2024/04/03 · "Update AGESA version to ComboV2PI 1.2.0.Ca. Fix AMD processor vulnerabilities security." Downloaded · DOWNLOAD · SHOW MORE DESCRIPTION · PRIME B550M-A WIFI II BIOS 3405 · Version 3405 ·
🌐
Reddit
reddit.com › r/asus › b550m-a bios flash button?
r/ASUS on Reddit: B550M-A Bios Flash Button?
April 14, 2022 -

New computer will not boot up - mobo is getting power, but nothing happens. Have swapped out all monitors/cords to see if that was the problem, but still nothing. My research leads me to believe that I need to update my Bios (Ryzen 5 5600G) but all the steps I can find tell me to use the Bios USB port or Flash button and I have no button and all my usb ports appear identical. I have the correct file on my usb, I have tried multiple usb drives and formats, and still nothing. All the ASUS support I find is based on using the menu functions or F2, but I can’t even get that far.

Anything I’m missing?

🌐
Reddit
reddit.com › r/buildapc › asus prime b550m-a wifi bios update
r/buildapc on Reddit: Asus prime b550m-a wifi bios update
February 5, 2021 -

Hey guys I just put together a pc with a 5600x and 3070 in an asus prime b550m-a wifi motherboard and I’m having issues doing a bios update for the 5000 series cpu, I also built one yesterday with a 5600x but in a aorus elite wifi X570 and it had the bios flash button so I was able to update the bios using that but the b550 doesn’t have a button. Any advise is appreciated I don’t want to have to put a 3000 series in to update the bios.

🌐
Tom's Hardware Forum
forums.tomshardware.com › home › motherboards
Question - Should I get a motherboard with a BIOS Flashback button ? | Tom's Hardware Forum
February 11, 2024 - Personally I wouldn't buy a new board without some flashback capability (a button isn't necessary for flashback). As it is most boards worth buying are typically going to have it as a feature. ... I've never needed the feature but I see it as a good fallback. If you practice good hygiene with your system, chances are you won't need to use it but it can't hurt to have it as a backup option. I bought my current mobo (ASUS Prime B450M-A II) because it was budget-friendly, had good reviews, and would serve my needs.
🌐
Reddit
reddit.com › r/buildapc › ¿cómo actualizo la bios en la placa base asus b550m-a para que acepte el ryzen 5600x (nueva construcción)?
r/buildapc on Reddit: ¿Cómo actualizo la BIOS en la placa base ASUS B550M-A para que acepte el Ryzen 5600x (NUEVA CONSTRUCCIÓN)?
October 13, 2022 -

Estoy esperando componentes y aún no he empezado a construir, pero me he dado cuenta de que la placa base que he elegido no reconocerá mi 5600x sin una actualización de la BIOS. Pero el problema que preveo es que si no arranca, ¿cómo entro en la BIOS para actualizar la placa base?

¿Tiene esta placa base un puerto USB de actualización de BIOS al que pueda conectar una memoria USB? ¿Alguien tiene alguna forma de resolver este problema? ¡Gracias por la ayuda! El sitio web de esta placa base no parece ayudar o simplemente no puedo reconocer si tiene soporte para una actualización de BIOS. Cualquier ayuda es apreciada.

PLACA BASE: Placa base micro ATX AMD B550 (Ryzen AM4)
CPU: Ryzen 5600x

🌐
Windows 10 Forums
tenforums.com › general-support › 211088-bios-flashback-button-important.html
Is BIOS flashback button important? - Windows 10 Help Forums
February 11, 2024 - It is the best feature ever invented. Never, but MS in it's wisdom allows OEMs to update BIOS and TPM via windows updates and it can brick PC. Is using Asus USB BIOS FlashBack by using a USB flash drive and pressing the BIOS FlashBack button easier than traditional way of flashing BIOS?
Find elsewhere
🌐
JustAnswer
justanswer.com › computer-hardware › icwxj-just-purchased-asus-b550m-a-motherboard.html
How to Use BIOS Flashback on ASUS B550M-A Motherboard Without Button | JustAnswer
Without a BIOS flashback button, update the B550M-A BIOS by entering the BIOS setup using a compatible CPU. Download the latest BIOS file from ASUS, place it on a USB drive formatted to FAT32, then access EZ Flash Utility in BIOS to perform ...
🌐
ASUS
asus.com › us › supportonly › prime b550m-a wifi ii › helpdesk_bios
PRIME B550M-A WIFI II - Support
"1. Update AGESA version to ComboV2PI 1.2.0.B 2. Update AMD 5000/3000 Series CPU fTPM version, please back up Bitlocker recovery key before updating this version BIOS"
🌐
ASUS
asus.com › support › faq › 1038568
[Motherboard] How to use USB BIOS FlashBack™? | Official Support | ASUS Global
April 9, 2026 - Q6: After the ASUS 400 series motherboard uses USB BIOS FlashBack™ to update the BIOS, the Intel 11th CPU cannot be used? A6: Please confirm the ME FW version contained in the UEFI BIOS before updating. It must be version 14.1.51.1528 or newer to perform the BIOS update action and use Intel 11th CPU. The following models need to confirm and update the ME version to support this function. PRIME B460M-A R2.0 PRIME H410M-K R2.0 PRIME H470M2/FPT PRIME H470M-PLUS PRIME H470-PLUS PRIME Z490M-PLUS PRIME Z490-P PRIME Z490-V ROG STRIX H470-I GAMING ROG STRIX Z490-E GAMING TUF GAMING H470-PRO TUF GAMING H470-PRO (WI-FI) TUF GAMING Z490-PLUS TUF GAMING Z490-PLUS (WI-FI) Z490-GUNDAM (WI-FI) Z490-PRO GAMING
🌐
Win-Raid
winraid.level1techs.com › bios/uefi modding › bios modding/flashing tools
Help with flashing Asus Prime B550m-a - BIOS Modding/Flashing Tools - Win-Raid Forum
July 20, 2025 - Hello, i have a problem with flashing my asus prime b550m-a mobo modded bios, i tried using different versions of afuwin, afudos and afuefi, tried flashrom, sadly nothing works. one version of afuwin managed to dump my bios, but i can’t flash it because i’m getting error “secure flash ...
🌐
ASUS
asus.com › us › supportonly › prime b550m-a ac › helpdesk_bios
PRIME B550M-A AC - Support
"1. Update AGESA version to ComboV2PI 1.2.0.B 2. Update AMD 5000/3000 Series CPU fTPM version, please back up Bitlocker recovery key before updating this version BIOS"
🌐
Amazon
amazon.com › ASUS-Prime-II-Motherboard-Flashback › dp › B08KH12V25
Amazon.com: ASUS Prime B450M-A II AMD AM4 (Ryzen 5000, 3rd/2nd/1st Gen Ryzen Micro ATX Motherboard (128GB DDR4, 4400 O.C.), NVMe, HDMI 2.0b/DVI/D-Sub, USB 3.2 Gen 2, BIOS Flashback, and Aura Sync) : Electronics
Buy ASUS Prime B450M-A II AMD AM4 (Ryzen 5000, 3rd/2nd/1st Gen Ryzen Micro ATX Motherboard (128GB DDR4, 4400 O.C.), NVMe, HDMI 2.0b/DVI/D-Sub, USB 3.2 Gen 2, BIOS Flashback, and Aura Sync): Motherboards - Amazon.com ✓ FREE DELIVERY possible on eligible purchases
🌐
Reddit
reddit.com › r/buildapc › first build won't boot - yellow dram light on asus prime b550m-a wifi ii
r/buildapc on Reddit: First Build Won't Boot - Yellow DRAM Light on ASUS Prime B550M-A WiFi II
March 15, 2025 -

I’m having trouble with my first PC build and need some help figuring out what’s wrong. When I try to power on the system, nothing happens except for the yellow light in the bottom left of the motherboard that turns on. No display, no fan movement, nothing. I've tried just about everything I could find, but It’s still not working. Here’s my setup and everything I’ve already tried:

Specs:

Motherboard: ASUS Prime B550M-A WiFi II

CPU: Ryzen 5 5500

GPU:XFX Speedster SWFT 210 RX 6600

RAM: Corsair Vengeance LPX 32GB (2 x 16GB) DDR4 3200MHz

PSU: Thermaltake Toughpower GF1 750W (Fully Modular)

Storage: Crucial P3 Plus 2TB NVMe SSD

The Issue:

  • The motherboard powers on, but the DRAM light stays lit (yellow/orange).

  • The fans (both case and CPU) aren’t spinning.

  • No signal to the monitor.

What I’ve Tried:

  • Reseated both RAM sticks multiple times and tested each one individually in slots A2 and B2.

  • Made sure ram was compatible

  • Cleared CMOS.

  • Checked all power supply connections on both ends

  • Switched to the other 8 pin cpu power connector (the cable splits into 2 ends)

  • Tried booting without GPU, Pcie expansion card, ssd

  • Reseated GPU multiple times

  • Checked for shorts on the motherboard

At this point I'm thinking that it has to be either a bios or RAM issue. Is there a possibility that bios flashback would fix the problem?

Any advice would be greatly appreciated!

Here are some pictures of the build in case that helps

🌐
Build Gaming Computers
build-gaming-computers.com › motherboards-with-bios-flashback.html
List of Motherboards With BIOS Flashback (AMD & Intel)
January 1, 2021 - We list which B550, X570, B450, X470 and Z490 motherboards have a BIOS flashback button that allows you to update the BIOS without a CPU installed.
🌐
Gzhls
gzhls.at › blob › ldb › f › 9 › c › 5 › 2ee2f9b0d525e6515566da52bc18c8f44ef8.pdf pdf
PRIME B550M-A (WI-FI) - Geizhals Static Content
Enter the Advanced Mode of the BIOS setup program. Go to the Tool menu to select · ASUS EZ Flash 3 Utility and press <Enter>.
🌐
ASUS
asus.com › motherboards / components › motherboards › tuf gaming › tuf gaming b550m-plus wifi ii
TUF GAMING B550M-PLUS WIFI II|Motherboards|ASUS Global
"1. Update AGESA version to ComboV2PI 1.2.0.B 2. Update AMD 5000/3000 Series CPU fTPM version, please back up Bitlocker recovery key before updating this version BIOS Before running the USB BIOS Flashback tool, please rename the BIOS file (T550MPW2.CAP) using BIOSRenamer."