You burn efuses by system updating, it's an anti-downgrade security measurement.
Last edited by XxShalevElimelechxX,
, Reason: making my post more clear.
It happens to everyone. It's refering to what is known as efuses and their sole purpose is to be blown. It's not an error, fault or mistake, it's by design.
Basically, any firmware for the switch will need certain fuses to be intact.
Let's say: Firmware 1.0 needs all fuses to be intact. If one fuse is blown, it will not boot.
The firmware update for 2.0 burns a fuse and it needs all but one fuse to be intact in order to boot. The system will now boot only 2.0 firmware, there is no way to downgrade to 1.0 anymore as one fuse is blown.
Yes, e-fuses are real.
Yes, burning e-fuses occurs when updating, so if the system tries to enter a lower version, a panic error occur.
Don't listen to them. E-fuses are a Chinese hoax invented to justify their "lower is always better" autism.
Sure. Think of e-fuses as write once flags. Every major updated sets one of these flags and they cannot be reset. It has happend to everyone exept for those who are still on 1.x
You welcome, and I recommend that instead of opening a new thread, ask your questions here: https://gbatemp.net/threads/switch-noob-paradise-ask-questions-here.488277/ , there are a handful of people who'll be happy to answer all your questions. Have a nice weekend!
sure i will be going to noob paradiseYou welcome, and I recommend that instead of opening a new thread, ask your questions here: https://gbatemp.net/threads/switch-noob-paradise-ask-questions-here.488277/ , there are a handful of people who'll be happy to answer all your questions. Have a nice weekend!
they are usually embedded in the CPU or some other chip. They are not surface mounted on the PCB.
Others have already stated the use of efuses to prevent downgrade.
For anyone interested on the specifics of how this works, Switchbrew have an excellent write up regarding fuses.
http://switchbrew.org/index.php?title=Fuses#Anti-downgrade
For anyone interested on the specifics of how this works, Switchbrew have an excellent write up regarding fuses.
http://switchbrew.org/index.php?title=Fuses#Anti-downgrade
Last edited by Dinomite,
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