You probably updated while in CFW. Atmo has protection for that and your autorcm was not lost. And that's why you still have 8 fuses.
Or you had the jig plugged in and you were holding VOL UP while the install finished. Entered rcm and re enabled autorcm
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Ehm. No. The console restarted normally after updating. After this i shutted down the console and put the jig in to start Hekate. I mean the console works fine.
No what he meant was you were most likely running Atmosphere before you installed the update which prevented AutoRCM from being removed.
Technically you can downgrade to any firmware with the current exploit even if you burnt fuses. The only stipulation is that if you downgrade to a firmware that expects a lower fuse count than your current fuse count, you can only boot the console through RCM. A fuse count of 8 indicates that you can downgrade to a firmware of 6.2 or higher without RCM. For future reference, you can find a list of fuse counts and their respective firmware versions here.
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Suggestion, maybe put a really explicit message on the NAND restore screen, spelling out that you have to restore matching boot0/1 with rawnand if changing fw version, or shit will break? See so many posts about that issue. (I'm not calling it an issue with hekate, to be clear, it's a common user error that a warning might help avoid.)
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That is interesting. I want to know that too. Should i restore boot0/1 and my rawnand in case of a brick? Or is that not important?
I guess what you would need to restore would depend on the kind of brick, you'd just need to restore the part which got broken, assuming your backup is the same firmware version your Switch is currently on. I'm talking about changing firmware versions, people commonly restore a rawnand.bin of an older firmware version but don't restore the matching boot0/1 (so they leave their existing boot0/1 of a newer fw version), then their system won't boot.
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The system boots. But only with rcm if i understand that correctly. Because the fuses don't match the firmware. Or how does the system work behind it? Do I have a mistake of my own?
Your system will not boot if boot0/boot1 don't match the firmware of the system. Meaning boot0/boot1 are also firmware-specific but people often forget this when they restore a NAND backup that is a different firmware than the one they are currently running. Having a mismatched boot0/boot1 usually leads to a blue screen when you try to turn on the console.
There are two different things that can happen when the fuses don't match the firmware when you boot normally. If your fuses are lower than the firmware, your console burns them to compensate so that the fuse count matches the firmware. If your fuses are higher than your firmware, your console doesn't boot up and the screen stays black. It doesn't even enter RCM in this state. This would be classified as a soft brick since you can just boot into RCM and use a bootloader that bypasses the fuse check which all of them do nowadays.
Yea that is the whole point of having a NAND backup and having a way to restore it.
I was on 7.0.1 with ReinNX and my 8 year old son updated to 8.0 ReinNX is not starting but I can load hekate with RCM. Is there a way to restore last known working situation? I have a backup, but i need my Zelda savefiles 
sure if you replace everything in all the partitions including boot0 and boot1 it NOT USER with the ones from the backup you have. or back up your saves manually and restore them after restoring the backup.I was on 7.0.1 with ReinNX and my 8 year old son updated to 8.0 ReinNX is not starting but I can load hekate with RCM. Is there a way to restore last known working situation? I have a backup, but i need my Zelda savefiles
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