For context, the RTX 3080 got ReBAR support with a VBIOS update. Some models ship with an updated VBIOS that supports it, some don't. The author's didn't.
The GPU manufacturer only provides Windows executables to update the VBIOS, the author's on Linux.
There is some valuable exploration (e.g. the mismatch in supported args in nvflash on Windows vs Linux) and just about as much information that is only useful on OP's machine (e.g. Ollama and LightDM are stopped before flashing, which is great if you happen to use either of those) or not useful at all (e.g. the word-soup-slop of diagram after diagram including "CPU Overhead Breakdown" -- what are we doing here?)
Thanks for sharing, anyway.
brandnewideas•36m ago