I've got a launch one I was already thinking I might finally be willing to mod once I have my Switch 2 on hand--having to open the thing up and poke around at the guts has been enough to make me not want to bother but less risky given the incompatibility list for Switch 1 games on Switch 2 is all games I don't care about.
If you do have a launch switch you don't need to open it up, just buy a $7 RCM jig off amazon (it will make it so you don't have to DIY your own) and you basically slide those into your joycon rails to boot into a firmware loader mode.
You'll need a few programs off github and you are good2go
