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I don't think we're talking about the same kind of eFuses. The ones I'm talking about don't serve a current-limiting function like a traditional fuse. They're f

I don't think we're talking about the same kind of eFuses. The ones I'm talking about don't serve a current-limiting function like a traditional fuse. They're features on chips to allow for non-volatile storage of a limited number of bits that, once blown, cannot be reset.

Chihuahua0633 2y ago
AKA how the Nintendo Switch prevents firmware downgrades - https://medium.com/hackernoon/how-the-nintendo-switch-prevents-downgrades-by-irreparably-blowing-its-own-fuses-884bd3b7a8ba https://medium.com/hackernoon/how-the-nintendo-switch-preven...
nebula8804 2y ago
Yes I know about eFuses, they were used on the Xbox 360 console as well. As far as I know, they are similar types of eFuses on the Tesla that are capable of changing their state via firmware instead of one time blow (different application) but I could be wrong. Its just in this case the thing being controlled is not a checksum for what firmware can be installed, but a checksum to confirm if current should flow to a specific path. [1]: https://youtu.be/Hl1zEzVUV7w?t=3874 https://youtu.be/Hl1zEzVUV7w?t=3874