I actually have 2 things to add. It'll be a long comment, and afterwards, you can message me or comment here and I will help you if you have issues turning your pc on with a ryzen cpu

First thing will be how to flash a 5000/5000G series (5600G/5700G) on AM4 boards featuring a Flashback button like my Asus TUF B550M-E WIFI. But any cpu would work similarly.

Second, when you are at your wits end, broken inside and desperate cause your new Ryzen PC won't post or boot, trust me, you are not alone in this and I'll try to help. I had 4 days of pure hell that my stomach hurt from stress cause I poured all my money into a PC that didn't work even when all components were brand new, all was plugged in correctly and each component was working on its own. I'll write my story down below.

1 - HOW TO USE FLASHBACK

This is purely for the guys who can't turn their PC on, monitor says "no signal" and the PC acts like it's dead. Its 99% the Bios. Or something is broken like mobo or psu. The new 5000 series Ryzen CPUs aren't recognized by most boards out of the box. You need to flash the bios. You do this with either a 3000 ryzen cpu (which ofc most of us don't have) or a flashback button. Newer boards have a button at the back where the USB and display ports are. Usually it's at the top. It's called a flashback button and allows you to flash new bios you need without a cpu.

To flash the board so it recognizes your cpu, which is why the pc won't post or boot most of the time, you need to go to the official manufacturer website and download the new/newest BIOS. For Asus, you download the bios file and with it the Asus renamer app gets downloaded too.

MSI bios file needs to be renamed to "MSI.ROM" Other manufacturers work siniakrlyy just check their support site.

Once the bios is downloaded to a pc, extract it and run the renamer app. It will automatically rename the downloaded bios so the board recognizes it via its name. In my case, it renamed the asustufb550biosfile to "TB550MEW.CAP" which is whorter for TUF B550M-E WIFI. It might show the renamed bios file without the affix like "TB550MEW", that's OK. Once it's renamed, copy the renamed bios to a FAT32 formated USB. It can be USB 2.0 or USB 3.0, doesn't matter. You just need to copy the bios file directly onto the USB without a folder. Basically to the "root of the USB". Once it's on the USB, you need to put it in the BIOS USB port. It's usually not directly under the flashback button. You have maybe 6 USB ports on your motherboard but only one USB is the correct one. On your mobo backplate, it shows which it is. If you don't have a backplate (doubt it), it says so in the manual.

Once the USB flash drive with the renamed bios is in the correct USB bios port, you need to press the flashback button for 3 seconds, then you release it and it will blink for 4-5 minutes in a green or red light. That means it's flashing the bios. And once it stops blinking, you have a Ryzen 4000/5000/G supported board.

HOWEVER! YOU DO ALL THIS WITH NOTHING ATTACHED TO THE BOARD, JUST THE USB WITH THE BIOS AND THE PSU (POWER SUPPLY)

Your psu is connected to the outlet and connected to the mobo with just 2 connectors : 24pin (main power for mobo) and 1x4pin/2x4pin CPU power cable. Nothing else is attached. No CPU, no drives, RAM or GPU! Just PSU and Board are used to flash the BIOS + the USB with bios.

Once the bios flashback light stops blinking, you switch your psu off (with the button, if it has one) and take out the USB flash drive. Then you connect the CPU with cooler (no need to screw it down yet, it's a test), and just one stick of RAM - if you have 4 RAM slots, put it in the second farthest from the CPU socket in B1 (from cpu A1, B1, A2, B2) You still don't connect drives or fans. You just want to test the bios. If you have integrated GPU on CPU (iGPU on APU), you don't even put in a dedicated GPU. You connect the monitor and turn the PC on via case or screw driver (look "How to turn pc on with screw driver" on YouTube). If it shows option to enter bios, you are good to go. If it doesn't show after few seconds, take the cpu out and place it back and try to boot again. Once the bios shows, connect everything install Windows/Linux and have a nice day. If it doesn't.... Read number 2:

2 - WHAT HAPPENED TO ME - ISSUES YOU MIGHT ENCOUNTER

I have build many PCs, both for home or gaming. I flashed bios many times. Never have I had so much issue with a new 2021 cpu like the 5600G (280$) and a new Asus B550 board (120$). When it at first didn't work, I was baffled for a second, then realized the bios needs flashing. I thought, I will flash this mobo and I'll have a working gaming PC ASAP by the time I drink my coffee. Well, 4 days later, 3 boards tested, 250 miles driven from home to tore to friend and back in heavy xmas holiday traffic, I was on my 20th coffee, head ache pills,almost crying grown ass man and my eyes hurt from all the tech sites and videos. My shoulders hurt form dismantling 3 PCs (one was my friend's pc) like 8 times! So why didn't an 800$ mid range gaming PC with superb specs all brand new, work? Well... PC case... Yes. Pc cases.

Flashed the b550 bios with 3 different bioses. Nothing. Used friends ryzen 3600 build and B450 gigabyte. Nothing. Used shop's MSI B450 mortar Max. Worked. Put it back into case. Didn't work. Returned it for an msi B450 tomahawk Max. Worked. I put it into a different case. Worked. Disconnected psu cables and put inside my case....nothing. I was about to break from the stress. I just couldn't figure out why new pc with appropriate bios doesn't boot or post. I flashed the board 3x and it worked and then shortly after didn't. And then I read something about static electricity and I couldn't believe it. The 1st board I got, the Asus tuf B550M-E WIFI, which I wanted to return as faulty or whatnot, after 4 days of other boards, Worked for the 1st time...outside the case, I was so happy. Then I put it into my main case. And it didn't work. Then I learned about the static electricity or something. Sounds stupid absurd silly. Sounds like I'm writing this out of my ass! But it was just that! and since I cleaned the case with water damped towel, it works flawlessly.

Summary:

It is the outdated bios, but then it was the case. You need to flash the bios, but a lose cable or anything I mention above can cause the pc to not post or boot. Some older PCs can boot into bios without cpu, ryzen won't. I learned that the hard way after watching confidently a YouTube video "how to boot pc without cpu or ram" So apparently, the very first day I did flash the board correctly, but a case just prevented me from everything. I pointlessly dismantled friends pc, spend 40$ on gas, made me kinda sick and feeling like dying for 4 days.

For any questions contact me. I'll help you work this out. I've seen hundreds of posts like this by people desperately trying to solve this mess

Hi, I have an Asus TUF B650 Plus Wifi motherboard and want to build my first pc. I now heard my friends talk about Bios Flashback. Can someone tell me what that is and how and why I should do it?

Hey, i just built my first pc and i have a problem. I need to use bios flashback since i have a ROG STRIX B550-f gaming and im trying to pair it with a Ryzen 5 5600g. But whenever i put the flashdrive in an hold the button for 3 seconds it just flashes 3 times (sometimes 4). Then the light just turns off and nothing happends. Can someone please help me i could not find anything about the problem online. So i have no idea what to do. (Sorry for bad english if i spelled something wrong)

So, I'm building a new pc and I have paired a 13th gen processor with a 12th gen motherboard (ROG Strix Z690-I and i5-13600k) and I'm pretty sure I'll need a BIOS update to run my chosen CPU. I haven't officially tested either one since I haven't gotten all the parts yet, but the manufacturer date on the box is long before 13th gen became available.

The board has the option of using the BIOS Flashback i believe for this exact reason, and even the guy at Micro Center advised I do as such. However, Jayztwocents has demonstrated issues in the past doing this, and I've already done BIOS updates using the traditional method with everything installed and running. I'm thinking about just buying and returning a 12th gen CPU after I do the update, but

1. i picked a shitty time to start buying parts, and my margins are thin as it is from the parts I actually need

2. i don't know for sure if Amazon will play nice with me returning a CPU (they've been good to me returning things before, but never something this expensive or delicate)

So i guess I'm looking for some input: do i dare attempt to flash my bios this way, or should I buy and return a 12th gen CPU to do it the old way? If anyone has tried the flashback before, I'd love to hear your input

I also have suspicions that the issues arise from not configuring the USB drive properly for the flashback (FAT32 drive on MBR partition) so maybe I just have to RTFM for this one

I have a TUF Gaming B550 Pro motherboard and a Ryzen 7 5800x CPU. I tried to update the BIOS with the flashback button, but when I would press the button it would flash and then become a still light without changing. The format is correct (FAT32) and I've tried cleaning the drive with diskpart.

Have a Asus ROG Crosshair VIII Hero Wifi 6 X570. Upgraded to a Ryzen 5900 and NEED to use the flashback to update Bios to the latest. Previous cpu is dead so not an option. Followed the steps to the T. FAT32 file system with the C8H.CAP file renamed and plugged to the USB port labeled bios and pressed the button while PSU is on but system is OFF. I've tried every USB type their is, 1.0, 2.0, 3.0, etc. Nothing is working. Formatted to FAT32. Nothing. Removed the CPU completely as to avoid the USB bug that exists with it. NOTHING. The most I get with it is three blinks and a solid blue light that stays on until the end of time. Put cpu back in everytime to test if it worked just for giggles ans I still get an 0d code.

Hey im a first time builder with a question regarding my b650-plus tuf gaming mobo and 7800x3d.

On asus' site for downloading a bios update it states: 1. Update AGESA version to comboam5pi 1.0.0.6 2. Update to bios 1406 for better compatibility with recent 7000x3d series processor. 3. Tpm 2.0 security update

Are these just stating what all is in the update? Or are these things I need to do before I usb flashback? Any advice is appreciated. Thanks.

Using gskill trident z5 32gb ddr5 6000 cl36 memory. Im scared to power this puppy up. Anything else I need to do so I can post successfully first time?

Last night I turned off my PC as usual, nothing strange happened, this morning I went to turn on the PC and it didn't start, not even the RGB, not anything. Then I noticed a green light blinking on the back, it was the bios flbk, I didn't know what it was until now that I researched it. Tried everything to fix it, removed de CMOS, used a screwdriver to turn it on, checked the button itself, I tried to update the bios with a flashdrive, unplugged all the cables from the back, move it to my table and I connected the USB on the bios port, and I let it run for several minutes, but after 30 minutes I thought my MB was dead, so I just let it there to do some other things, came back 2 hours later, pressed the power button, and it booted, I got excited, turn off the pc again, put it back at my desk, plugged everything back, and now it doesn't start again, I don't know whats wrong, its been another 30 minutes, and it's still blinking, am I doing something wrong? And how did this happen if I never have messed with the bios or this button?

Its an Asus prime x670-P WIFI

Trying to update the BIOS, watched the tutorial on the ASUS website. LED is supposed to turn off when update is finished, but it been on for over an hour. Wondering if it usually takes this long. Video said not to power off computer, remove flash drive, or press reset cmos button.

I just received my ASUS ROG Strix B650E-F Gaming Wifi motherboard and I'm on the BIOS / Firmware page on their website. I have found the latest download but in the description it says I need to run the BIOSRenamer before running it. Does anyone know what that is or can I just rename the download file in file explorer through windows and then put the file on my flashdrive and I'll be good?

Edit: Also, it does not tell me what to rename it to. Or is the "SB650EF.CAP" what I am supposed to rename the file to?

I will be building a new pc in the next few days with a 7800x3d and asus rog strix b650-a mobo. I've heard that there were some voltage issues with this combo that were solved with bios updates. Not knowing what version of the bios will be on the board, should I use the flashback option to update to the latest drivers with nothing installed, on the board or would it be safe to wait for a post and windows install?

The flashback makes sense to be safe, but for some reason I'm worried about bricking the board.

As a side note, does anyone know if xmp ram is working well with this, or is expo ram ideal?

Thanks!

So i have a PROART Z790-CREATOR WIFI MBO, assembled the PC myself, worked like a glove for year and a half.. Now, soon as it's turned off, cannot power it back again normally, since it behaves like the button is pressed. It's not, it's installed properly, nothing is pressing it etc.
I can turn it on, but it's a hussle, plugging it out of power, and plugging back...
Thing is, if i return the board, it can take MONTHS untill i get it back. And i do not have budget for that.
Is there any way to disable the bios flashback optin in bios?
Thanks

Hello,

I just built my pc with a B550-f and theres a button “bios flashback” what is it? I just press on it and it puts my bios up to date?

hi, i bought the asus strix z690-A and i7 13700K and i need to upgrade the bios to support 13th gen my question is should i put the processor before or after flashing, is it safe to finish the build then flashing ? thanks in advance guys

I just need some help seeing if my BIOS flashback feature on my board is just defective or something. When I try to use the feature it gives me a solid green light and I verified my USB is formatted as FAT32 and it’s the correct file for my motherboard. I know I could use the EZ flash feature to update the BIOS, but I wanted to see if that way would work as well. Weird thing is when I tried to update using the EZ flash feature it did update, but not using the feature on the board itself. I also made sure I connected the USB to the correct slot on the bird as well and still the solid green light. Any help would be greatly appreciated. :)

My BIOS flashback has been installing for over 30 minutes now. The manual didn’t tell me to check whether my USB was formatted to Fat32 (only found out watching the videos).

Is it okay for me to turn off the power so i can reformat the USB? I am concerned I will brick the motherboard

Thanks

Hey guys I'm considering getting a b550 mobo for ryzen 5000 series, as I understand there is a chance that they support r5000 straight out of the box but it might be necessary to perform a bios flashback with a usb (I checked, the mobo I want supports this feature) my questions is this : is there a risk of bricking the board if there is an issue during the bios flash ? Is it worth spending 12€/14$ to get the the retailer to do a flash or is it low risk enough to do it yourself ?

Thanks for your input

I just recently completed a build, apart from the software portion. I have an Asus ROG Strix B500-F Gaming motherboard with a Ryzen 5 5600x CPU. Everything I’ve read online indicates that you need to update the bios in order to be compatible with the CPU, however the BIOS screen worked perfectly straight out of the box for me. Should I still be downloading the most recent software from ASUS to flashback?

Thanks

The one where you can flash the bios without having the cpu, ram, gpu installed, just from a usb stick.

Might get a 13th gen with a b660 motherboard, so would want to know if its a safe move doing that, because I would need to update the bios that way. People with AMD boards can answer too though, ofc.