How the Nintendo Switch prevents downgrades by irreparably blowing its own fuses

Re:How the Nintendo Switch prevents downgrades by irreparabl... by rekoil on Tuesday June 16, 2020 @06:10AM (#23537455)

And for those who stayed on the 4.1.0 fuseset (or certain versions below that) there are warmboot exploits available. So those who are able to "normally" boot those firmwares do not need to use AutoRCM (or an RCM-"jig") to access RCM anymore.

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Re:How the Nintendo Switch prevents downgrades by irreparabl... by hd4 on Tuesday June 16, 2020 @07:17AM (#23537795)

While this is true, I was essentially saying that you don't have to remain on an older firmware as long as you're careful about how you move around between versions. I'm on 10.0 but I could go back to 3.1.0 anytime, and then move somewhere in between those versions if we got a coldboot exploit for example (which according to notable members of the Switch homebrew community is not likely).

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Re:How the Nintendo Switch prevents downgrades by irreparabl... by rekoil on Tuesday June 16, 2020 @07:58AM (#23538094)

Yeah, sure, you can ignore the fuses, but only if you assist the boot process using a jig and an injected payload. The stock Horizon kernel from FW 10.3 won't boot if your fuseset is for 3.1.0, unless you inject a chainloader which fakes the fuseset or removes the check.

Edit: I see what you were referring to, I was unspecific in my comment, updated it!

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