Possible steps to explain include using official Nintendo tools or, if they're using homebrew, the process might involve extracting NSP, updating using hactool, and injecting back via hactool, but again, this is for homebrew use only and isn't sanctioned by Nintendo.
Finally, the user might want a step-by-step guide on updating a Switch game via NSP, but I have to caution them about the legal implications. Alternatively, direct them to official update methods. okinawa rush rom nsp update switch game verified
In summary, I'll outline the official vs. unofficial methods, legal risks, and provide steps for those who are in the homebrew community but make it clear that this is not supported by Nintendo and risks are involved. Possible steps to explain include using official Nintendo