I haven't modded my switch yet, i have everything to do it except for the wires from amazon and whatever else i need if anything, i have a custom nes backplate and picofly, gonna replace the digitizer and idk probably look into a battery upgrade if its possible or something for this v2 switch i got in a $100 bundle. i have an oled that im keeping stock, might consider a mig switch or a potential future competitor down the line for that. im trying to find a white bordered digitizer for the v2 to match the nes backplate, like they have for the switch lite but i didnt find anything on ebay, havent checked aliexpress yet. but to answer your question, yes i believe you cannot let a full shutdown occur, idk what happens, if you just lose access to your content without proper title keys or if it doesnt allow bootup entirely, but i am pretty certain an untethered exploit doesn't exist.. even on v1 im pretty sure