@wolus666
The M25P05 is a 512-Kbit (64 Kbits ×8) serial flash memory.

Ok, can you elaborate?

@wolus666 Can you attach the original bios file with reply > attach file?

If the gop'd rom is too big for the memory-chip, change it to a bigger one (soldering required). In some rare cases, it is possible to shorten the vbios and/or choosing a smaller gop-image.

Edit: With only 64KB space impossible to add gop. GOP-images will take about 58KB, go for a 128KB-chip.

You are right. Original bios rom is 64KB while upgraded one with GOP is 122KB. Would need to find a bigger chip. My chip is indeed 512kb so 64KB, forgot to look at units.
Do you have a chip in mind?

Doesnt matter, SPI-protocol is universal, only same voltage, usually 3Volt.
If you have no SPI-flasher, you should choose a type which is supported by your flashing-tool: Winbond, SST, ST, MXIC, Gigadevice, PFlash,.....are usual and popular on many expansion cards.
Or desolder it from a broken GPU.

@pitdicker

Since you seem to know how this app works, any chance you are able to add the 3.x series of EFI for AMD cards to the tool?

@Ruin
Awesome! Thank you!

gopupd told me to report my file/bios. It is from an PNY GTX 580 XLR Enthusiast Edition (GF110 board).

Here it is :-)

(had to make it a txt-file in order to upload it.)

Maybe someone can remove the unnecessary stuff from the BIOS so it can fit in a >128 kb file.

Cheers

EDIT: Btw - which architecture is better for this fermi card? GF10x or GF119?

Hello, I registered to just say THANK YOU for your amazing work and advices here! I'm running on more than a decade old Asus EAH5850 DirectCU (ATi Radeon HD5850) and your piece of SW art is working like a charm even on that old GPU.

My GPU on TechPowerUp: techpowerup.com/vgabios/176193/176193

I'm uploading my original vBIOS (Cypress_orig) and modified one (Cypress_updaGOP).
Original vBIOS was downloaded via GPU-Z and modified vBIOS flashed via amdvbflash_win_3.20