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Polaris Bios Editing ( RX5xx / RX4xx ) - Page 13

post #121 of 4849
Quote:
Originally Posted by comagnum View Post

xfx1328mhz.zip 110k .zip file

I'm not sure what I'm doing with the bios editor. Will someone take a look at that and let me know if it's possible to change the max voltage to 1.2/1.25, up the ram limit/max voltage slightly, and change/tighten the timings for the ram? I'm really apprehensive to do it myself so any help would be much appreciated.

Just flashed to this thought it all went fine but i set frequency states to max then get a grey screen and pc reboots. So i'm thinking i can not flash a XFX Bios on a sapphire card. I really need a backup i forgot to backup. This card is for my HTPC setup thought would been nice to get the black edition bios on it. So if anyone has the Original Sapphire 8GB model Bios please give me. Or have a working modded one for this model.
post #122 of 4849
Here is the Original Sapphire Referenz Card Bios -> https://www.techpowerup.com/vgabios/184368/sapphire-rx480-8192-160603
post #123 of 4849
Quote:
Originally Posted by Sp3cialUs3r View Post

Here is the Original Sapphire Referenz Card Bios -> https://www.techpowerup.com/vgabios/184368/sapphire-rx480-8192-160603

Thanks but i think i know why this is happening. It was my fault WattMan is very poorly labeled. Those states i was editing was the actual clock i thought it was something else. I much perfer MSI Afterburner or other software that actually labeled better for overclocking. But thanks i will keep it incase i screw up. I hope to see custom ones posted on here some time.
post #124 of 4849
Could someone run a modified BIOS, one that causes the driver to not load and copy their Event Logs from eventvwr.msc? redface.gif
post #125 of 4849
Thread Starter 
Quote:
Originally Posted by caa82437 View Post

Could someone run a modified BIOS, one that causes the driver to not load and copy their Event Logs from eventvwr.msc? redface.gif
thumb.gif as soon as i can
post #126 of 4849
Quote:
Originally Posted by caa82437 View Post

Could someone run a modified BIOS, one that causes the driver to not load and copy their Event Logs from eventvwr.msc? redface.gif

For some information on the bios signature view this.

Do you think you can solve this issue? if so be cracking smile.gif . I have done some testing as to see what regions of ROM the signature protects, my reason is even though we can mod Hawaii/Fiji ROM, a modified ROM will not work in "pure UEFI" mode (ie CSM=OFF, etc), you need CSM=On for it to function.
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post #127 of 4849
Quote:
Originally Posted by gupsterg View Post

For some information on the bios signature view this.

Do you think you can solve this issue? if so be cracking smile.gif . I have done some testing as to see what regions of ROM the signature protects, my reason is even though we can mod Hawaii/Fiji ROM, a modified ROM will not work in "pure UEFI" mode (ie CSM=OFF, etc), you need CSM=On for it to function.

Thanks!

Btw, the signature is located at offset 0x275 in the BIOS (16 bytes long). There is also 4-bytes that change too at 0x269.
Edited by caa82437 - 7/7/16 at 7:50am
post #128 of 4849
Quote:
Originally Posted by caa82437 View Post

Thanks!

Btw, the signature is located at offset 0x275 in the BIOS (16 bytes long). There is also 4-bytes that change too at 0x269.

specool.gif , @kizwan has a file which when loaded in Hex workshop shows some structures for upper section of ROM that AtomDis/AtomBiosReader does not touch upon, I have not used it yet as been involved in other "stuff". Perhaps he has updated it some what and will link it again?

BTW data at 0x38000h is SMU firmware which = SMC AFAIK, I think RX 480 is like Fiji on that aspect, view this on some info on Fiji SMC.
Edited by gupsterg - 7/7/16 at 8:19am
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post #129 of 4849
i think that driver can be hacked just get error message from event log so we can use it as clue where to look into driver itself
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post #130 of 4849
Ok... So I have some experimental patches for the driver. You will need to run Windows with signature enforcement disabled.

C:\Windows\System32\atikmdag.sys

BACKUP YOUR OLD DRIVER!

TEST1
Signature: 74 21 3B C7 74 13 83 C0 FE 3B
Patch: 90 90 3B C7 90 90 83 C0 90 90

TEST2
Signature: 75 36 8D 50 53 48 8B CE
Patch: EB 36 8D 50 53 48 8B CE

Do the tests separately, if TEST1 doesn't work then try TEST2. I would test this myself, but I managed to pop the PCI-E lanes on motherboard yesterday removing a graphics card...

If it doesn't load, show your Event Log wink.gif
Edited by caa82437 - 7/7/16 at 9:14am
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