bought a system that was in autoRCM and didnt know it.

format your sd card to Fat32 and copy just Atmosphere in RCM push fusee-primary.bin payload see if that works if it does then you can copy hekate and make emummc if you want

 

if you want but you are also fine updating to 10.2.0 only

 

you can use google for that or this forum
and dont make new threads theres already thread for that you can install any firmware you want with DayBreak app that comes with Atmosphere just have to download the update you can also google that

 

You are able to turn off autoRCM in the Hekate bootloader menu. After you do that turn it off format to FAT32 and put atmosphere (or ReiNX) and use your desired payload (Make sure to put sigpatches in the folder or use sigpatch updater)

 

ReiNX is Officially Dead so better Not use that
and ReiNX is technically Atmosphere in a different wrapper with build-in patches

 

I didn't know they weren't working on it anymore cause I only use atmosphere

 

well ReiNX is actually Dead since 8.1.0 firmware but repo was officially archived few months ago and discontinued

 

AH I just neer pay attention to ReiNX because I use atmosphere and sometimes Lineage OS

 

You download a homebrew application that can install firmware updates such as Daybreak or ChoiDujouNX then you download the firmware update itself online. Nintendo Switch firmware files are considered copyrighted content so we cannot link nor help you with that but with the right search terms, they shouldn't be too hard to find. Then once both are on your SD card, you launch whichever homebrew application you decided to use and install the firmware from there.