On: How the Nintendo Switch prevents firmware downgrades

[notriddle]

> 1. Disable firmware digital signature verification (not sure if this is at the hardware level or not)

That's supposed to be very difficult to do.

[Scaevolus → notriddle]

Exactly, every stage of the boot is supposed to validate the next stage before continuing.

The recently discovered bootrom exploits break that chain of trust, allowing unsigned code to execute.