if you have autoRCM, you'll need a way to send a payload to disable autoRCM.
either your computer, or a smartphone, or a dongle.
there are different devices you can use as payload sender, pick here the one you want to use, or the one you can use :
https://wiki.gbatemp.net/wiki/List_of_Switch_payloads
once you have the payload sender of your choice, get and send Hekate payload binary to your console while in RCM.
from here, you'll get a menu to choose to enable/disable AutoRCM, or even launch the firmware without any patch (the option is called "stock") without removing AutoRCM.
launching the official firmware without removing autoRCM can be useful if you want to bypass fuse burning. but you might not need it, if you don't care then just disable autorcm.
another solution is to update the console, but you'll probably be banned (if not already) for using SXOS.
note:
I've read bricMii and autoRCM used different patching location and were incompatible one with another. I don't know if it's real or not.
I also don't know, if different, which one SXOS is using but I just suppose it's using the same as hekate.
you can try hekate, or bricmii, or both in case you need to disable both.
maybe someone will be able to confirm so I'll know better for the future.