T420 Nvidia GPU how to inject the binary blob
Hello, I have recently gotten thinkpad t420 which I then librebooting (paid somebody to do it since it involved complete disassembly) but yesterday i found out that display port on the machine is hardwired to discrete Nvidia GPU (NVS 4200m) so in my current setup it doesnt work which is big problem for me. I know that it is possible to make discrete nvidia gpus work on coreboot with injecting binary blobs but i cannot find any documentation on where to find these blobs. I plan to do this flashing myself since i know you can reflash from libreboot to coreboot internally without the need for disassembly. I would be very thankful to anyone who can guide me to correct sources for this.
TLDR: Where to find and how to properly inject binary blob into coreboot so the discrete gpu will work.