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How to FIX & RE-Flash BIOS of Bricked GPU on RX 470 / 480 Series

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Have you bricked your RX 470 or RX 480 because of bad BIOS or the flashing went wrong? In this tutorial, I am going to show you how to fix the bricked GPU by restoring the original BIOS and then to flash again a modded version.

A few days ago, I was helping a friend to flash a modified BIOS on two Sapphire Nitro+ RX 480 8GB OC for a better mining hashrate on Ethereum, and not only. The thing is that flashing the BIOS on the first card went perfect, but for the second card, we spent like 3-4 extra hours to figure what is wrong with it. We followed the same steps like we did with the first GPU (same steps I am showing in my tutorial).

What really happen? Well.. the flashing went well with no errors, but after the restart, we got a strange blue or black screen.. after few more restarts had the same results and at that point, i knew that there was something wrong with BIOS.

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For the first GPU, I used 1500 timings (copied to 1625, 1750 and 2000), which went great, hitting around 30 Mh/s on Ethereum.

As for the second GPU I used the same timings on the first try but went bad, then I tested with 1625 timings copied to 1750 and 2000, getting 27-28 Mh/s on Ethereum (unstable).

How I recovered the broken BIOS? What I did to re-flash again the BIOS for few times until I found the best combination?

If this happens to you, no worries, you will get the GPU back up and running in a matter of minutes.

Here is how to fix bricked GPU BIOS on Sapphire Nitro+ RX 470 & 480

IMPORTANT: All these modifications were made on a Sapphire Nitro+ RX 480 8GB OC, Samsung memory!


Alway backup BIOS before any modification

Always use ATIflash to backup BIOS

Always use Polaris Bios Editor to modify BIOS

Recommended tools:

1 VBios Switch

I hope you did not flash the ORIGINAL BIOS and before that, you switched the BIOS jumper to “silent” position, to HDMI ports side. Also, I hope you created a backup of both BIOS versions!

  • Shutdown your PC
  • Switch the jumper back to original position (OC version)
  • Turn on the PC

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2 Flashing Original “silent” BIOS

  • Wait for full PC boot
  • Switch the BIOS jumper to the “silent” position, to the HDMI/Display Port cables side (yes is safe to switch the BIOS while the system is running, it is meant to work like that)
  • Start ATIflash as Administrator
  • Flash the original BIOS ROM that you backup-ed before to modify it
  • Reboot, that’s it
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Once you complete this steps, your GPU should be running with no problems.. feel free to flash a different modded BIOS version with different timings, like I did.

In the end the card was faulty, maybe from the manufacturer and was replaced.

Hope this was helpful! Good luck!

Thank you for reading. As always, your comments, suggestions and questions are welcome.

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  • Liviu Stanciu

    It happens when the bios is flashed from the UI of atiwinflas. Flashing it from CMD as admin is a safe. At least I think it is.

    • Alfredo Putamadre

      I never bricked a card flashing from the UI, but there’s always a first time. If the card is dual bios just flash and if it breaks it can be easily fixed.

      • Yep i also flash from the UI only.. no problem so far..

  • Jack Casey

    How about for cards which don’t have the switch?

    I just bricked an MSI RX470 8GB – I applied 1500 straps which went fine, I then upped the memory mhz to 1980 using WattTool and got blue screen, the system goes to a black screen and hdmi signal is lost whenever I bootup to windows.

    What can I do?

    • Have you tried to run with on board video card or cpu video card and then to flash the bios to bricked card?

  • geekrohit

    One of the cards I got hashes for a minute and then goes directly down to 0. Its Sapphire Nitro+ OC RX470 8G. I’ve tried the above method, no changes. Its been stock since I bought it. Any idea ?

  • Bhanumat Wiwatmaikul

    Do I need to flash all card on my Rig?
    Is it need to switch VBios Switch back as before flash?

    • Not really sure if i understand your question, have you bricked all of your cards?

      • Bhanumat Wiwatmaikul

        Thanks for reply. I had tried by flash 6 cards on my Rig. It’s work find.
        All cards won’t bricked and hash-rate are increased from 24.xx to 28.xx. Unfortunately, my PCIe lane crashed one.

  • Konstantin

    Hello, I have the same problem with a Sapphire RX 580 Nitro+ 4G. I flashed the modded bios (1:1500 and 2:1500 to their corresponding 1750 and 2000), it booted fine but then, after setting the memory/gpu frequency and undervolting it the screen went blank an the computer froze. I then booted with the integrated gpu and successfully restored the original bios I had backed up before (both the OC and the silent one) but I still don’t get any video signal from it. The card works but not in Windows, I get video signal when entering the motherboard bios. I tried various drivers, a windows reinstall but without results. What else can I try? Is my GPU dead, should I return it considering I did the exact same thing with my other card and they all work fine.

    • Not really sure what to say.. do you still have problems ?

      • Konstantin

        I tried a few more bios reflashes but it still doesn’t work. Then I forwarded a request to the seller to send it back for replacement.

  • Behrouz Sedigh

    ok Possible on Safe mode win7 64 bit ?

    • what do you mean ?

      • Behrouz Sedigh

        i finally found out , how does nvm 🙂

  • itsmining

    Sir I’m really f*cked up right now. i’m using 2 cards when im going to flash my 470. I didnt noticed that i Flash the 480 instead of 470. And i dont have the backup of my 480 4gb (Silent Mode bios) Is there any chance to fix the card? coz in OC bios its working. but to the silent mode it will boot but after 30sec – 1 screen will turn to black.. Where can i download a default bios for my rx 480.

  • Kevin

    I fucked up both the left and right toggle switch of my Sapphire Nitro+ RX480 8GB OC. Can I still revive my card?

    • Hi @disqus_1JmZ0bctG2:disqus , what do you mean ? The gpu is not starting with none of the bios versions?

      • Kevin

        Yes. I bricked both of them and I lost the stock bios rom because I’ve overwritten it with the modded one.

  • Martin reyes

    few questions,…..
    I have a saphirre xr4 70 (2), asus radeon rx 570 and a radeon rx 480 total of four cards. Is it possible to run all four and mine eth+dcr with them?
    I am having trouble to view all cards, so I may have answered my own question cause one card will display then the other will not and I don’t see all in the device manager and when scan for changes I cant get any updates?
    last when I try to run the eth+dcr file it will not open to start and run?

  • Stef Anos

    Hi great the tutorial!
    I have some questions.
    I cant understand why i must backup silent bios. For mining we need silent mode?
    In my case i backed up the original one and then i flash the card but never backed up the silent bios.
    Can i backup the silent mode after flash i never switched it in silent mode.

    Thanx for your time

    • Not sure if i understand what exactly you did :-s

      • Codestaxx

        I did the same thing. I didn’t know about the bios switch and I flashed the original ROM. I have 4 out of the 6 running stable 30Mhs but 2 are not stable and keep bringing the rig down. Why do you need to change the bios switch? Is it necessary?

  • Dino

    When I find a bios backup (silent mode) for my 470 4gb with Elpida memory?

  • Mohammad Azroun

    Thanks man it worked just fine, I’ve been looking for ever for away to fix it.

  • erreterr

    I don’t have my backup for Sapphire Nitro + RX480 4GB version , now screen flickering after manipulating with the BIOS flashing. Can I get somewhere else a backup from a working same Graphics so that to write to this non working one ?
    I messed up because I have all others Nitro + RX470 8GB , and this one was so Sapphire Nitro + RX480 4GB version and was bricked accidentally
    I kindly ask anybody to give me a original backup for this card.
    I think it has Micron after I investigated with GPU-Z it is reporting as Micron
    Hi people
    After changing the switch position towards the backplate now card works like it was normal, and GPUZ detects now the card as Elpida memory. I am asking can I write one backup that I found on to the card so that to make it working again
    Anoraks_Sapphire RX 470 Nitro(plus) OC 4GB Elpedia_original.rom


  • Johnny™

    Thank you man! You are a savior! You are the real MVP. I finally fix my sapphire rx 480 4gb 256bit 1306 mhz oc mod bios. :*

  • Tomo

    i think i have problem with my sapphire rx 470 4gb nitro (non+)
    after flashing card is dead, i mean windows can’t see it
    what i can do?
    i tried plug it in different slots – no results, i tried to flash it with ati – adapter not found
    i used DDU, boot without instaling AMD drivers – no results

    please, help me

    • Hey @disqus_DiUY7w4nmb:disqus , is windows booting with this card, or on boot the screen turns black/green etc ?

      • Tomo

        yes, booting normally, find only gpu integrated with motherboard

        • Umm.. drivers version ? Also if using newer have you patched them ?

          • Tomo

            newest driveres, yes i have patched..any ideas?

  • Klamatiel Piliq

    So, i effed up flashing. The OC bios is dead now. I do have dual bios, which i’m running now (Sapphire nitro+ oc, 4gb, rx480). Problem is the system doesn’t boot with the main effed bios, black screen and such even with igpu enabled. What do you recommend?
    LE : i have backups of both bioses, untouched.

    • Flash again the original bioses, then modify timings on original bios and flash it again.

      • Klamatiel Piliq

        Flipping the switch when running then flashing the oc original one?
        PS : not for mining, gaming. I effed it trying a 580 one.

  • I guess my bios switch is not working. (rx570 nitro+) anyone knows any way to check it?

  • Imre Csoka

    if i have my switch on normal mode, away from ports then ATI flash can not read the bios to save it, now what?

  • MD Golam Mostafa

    Error reading from rom. This show when open atiflash.

    • E30Tomas

      atiflash.exe -p (or -pa, i don’t remember) ORIGINAL.rom -fp
      It did force (-fp) writing bios regarding any security (this is ORIGINAL rom, so we shouldn’t worrie about any seciurity Right? I mean really Right?!) In my case right. Bios is back up and running :).

  • Frank

    Hello there, I have been having this problem for a week now. “Error reading from rom” This show when open I try to save Original bios using Atwinflash.
    My Cards are Radeon Sapphire Nitro RX 470s 8 GB. These cards are on a 7 Card Rig with mixed memories, some are Hynix and others are Samsung. Am so frustrated getting only 21 MH/S with Ethereum only mining.

    • Is this happening when you try to backup it? Have you also tried with CMD ?

      • Frank

        Yes, happens when i try to back up bios. I tried with CMD same problem. Atiflash version i have been using is 274

  • Evgeni Enchev

    Hi I try to clock the bios of RX 570 8GB sapphire. Anybody know how to fix Brinked card. When I start them I see a stars ✨ Having a message no adapter detect. Any idea how to fix them Thanks in advance

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