I don't know. Firmware can be cryptographically signed. Some anti-tamper devices even burn physical fuses. A car is expensive to brick, so not a lot of people w

I don't know. Firmware can be cryptographically signed. Some anti-tamper devices even burn physical fuses. A car is expensive to brick, so not a lot of people would play around with it. For instance, here's what free-software devs say about nVidia drivers: "Little hope of reclocking becoming available for GM20x and newer GPUs as firmware now needs to be signed by NVIDIA to have the necessary access." https://nouveau.freedesktop.org/ https://nouveau.freedesktop.org/