ROM Hack Is it possible to extract/inject via bootloader?

[Looperif]

If I have 2 switches one hacked and one legit and I want to transfer a save file from the hacked to the legit without going into cfw and potentially leaving any trace of cfw execution since bootloader does not touch OS or write to telemetry logs

Is it possible to access save data from bootloader since we already can access the whole nand for backups?

 

[Draxzelex]

Possible yes but I'd imagine the reason its not been done is not only would it be harder to do such a thing but you can only use such a tool by powering off the Switch, both issues are resolved with a homebrew application.