Thank you so much. This was really helpful to expand my understanding. I appreciate it a lot. Here is what I am about to do next:
1. Going to use ChoiDujourNX and update my Switch's SysNAND to 8.1.0 (or whatever is the latest version) I believe that my unpatched Switch will retain the RCM exploit and will work with the jig the same way it currently does on 4.1.0?
2. Should I just ignore this "WARNING WARNING WARNING: Running a FIRMWARE >= 4.0.0 WITHOUT REPLACEMENT FS_XXX_nogc.kip1 ACTIVE WILL MAKE YOUR CARTRIDGE PORT UNUSABLE ON EARLIER FIRMWARES." ? Since my Switch is already on 4.1.0, it doesn't apply to me right? If I downgrade from 8.X to 4.1.0 using my clean NAND then the cartridge slot will remain usable, right?
3. Where do I copy these sweet patches?
4. One unrelated question. Is the RCM exploit truly unpatchable by Nintendo without physical access to my Switch? If they break this exploit then the hackers will continue to find ways to re-enable it?