Noun
bootROM (plural bootROMs)
(computing) A read-only memory used for the initial boot process of a computer or device.
It is believed to affect all of Nvidia's Tegra SoCs released before the T186 / X2, allowing for early bootROM code execution, fully compromising of on-device secrets. Source: Internet
That's an important security measure if the bootROM itself is secure but a big problem if the bootROM is exploited, as seems to be the case here (Nintendo and Nvidia were not immediately available to respond to a request for comment). Source: Internet