EVGA RTX 3060 XC 12gb wrong bios device id mismatch

[Honnoshin]

Hi everyone,

I bought a used GPU and seems like a previous owner flashed a custom bios. When I try to flash a stock bios, I keep getting an error "device id mismatch". I've tried using nvflash64 -6 but still can't bypass the error. Currently have nvflash v5.867. Does that mean that I have to use nvflashhk with ==protectoff ?

GPU - EVGA RTX 3060 XC Gaming 12gb
Current bios version - 94.04.71.00.69
PCI Device ID - 2487
PCI Subsystem ID - 3842.3658
VGA Bios Collection: EVGA RTX 3060 12 GB 12 GB | TechPowerUp

TechPowerup verified bios for the same gpu
PCI Device ID - 2503
PCI Device ID - 3842.3657
VGA Bios Collection: EVGA RTX 3060 12 GB | TechPowerUp

 

[StViolenceDay]

Your VBIOS is fine. Your EVGA is GA104-based, and the verified one was GA106 based.

Both a valid 3060s, just produced based on different chip variations (and their VBIOS are not compatible with each other)

 

[Caring1]

Pictures of the stickers from the rear of the GPU so we can help find the correct Vbios.

 

[Honnoshin]

I think it was a verified bios. I messed up and flashed the wrong bios with nvflashk and now no image. Can I use the latest nvflash64 to flash the original bios or I have to go with the nvflashk (modified) because there will be a device id mismatch?

Before flashing a different bios, I saved the old one.

 

[StViolenceDay]

Try nvflashk for reverting. Since you already has black screen - you do not need extra safety checks present in non-modded version

BTW that 3658 in the start of CIN label matches the subsystem id of your origonal VBIOS. Any official VBIOS updates for your GPU (if they exist) - would have subsys id ending in 3658

 

[Honnoshin]

@StViolenceDay and @Caring1, thank you so much for your help! I was able to restore the original bios on the gpu by "nvflashk --protectoff", then "nvflashk -6 vbios.rom" and then restarting Windows after the vbios flashing process was complete. EVGA software recognized it without any issues and I was able to install the drivers and now I have an image. I am so happy I didn't completely brick the gpu!