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

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.

    • please confirm that you card is sapphire nitro+ rx 480 8gb!

  • Kevin

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

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