Switch 3.0.1 fixed sm:h/smhax https://t.co/D1XoXcPyoe -- bug that allows for access/registration/unregistration to/of any arbitrary service.— Michael (@SciresM) August 17, 2017 It can't be understated how big this bug was. If you want switchhax, don't update to 3.0.1. It might take significantly longer if you do.— Michael (@SciresM) August 17, 2017 For context: the sm bug is what's enabled basically everything from game-romfs/savefile/sysmodule code dumping to even other known bugs. RIP— Michael (@SciresM) August 17, 2017 fun fact about the "huge bug" that was fixed on switch in 3.0.1: 3ds had a similar one, used by gateway and not fixed until around fw 7.0— smea (@smealum) August 17, 2017 Man losing sm:h vuln sucks, but at least it means this can be out in the open. If you have a switch on 3.0 or below, go have fun with it.— hedge.exe (@hedgeberg) August 17, 2017 This exploit gives full permissions to any service, that's why it's so important.