It depends what you mean by untethered. To make mine more kids friendly I have my Switch running with autoRCM enabled and use an "RCM loader" - https://www.ebay.co.uk/sch/i.html?_nkw=rcm+loader. With this device you just upload a payload file to the device and then connect the RCMloader to the Switch console's USB port whenever you power it on. Mine boots straight into Atmosphere
Hey, Thanks for the suggestion! I know there's devices like this or you can even use your Phone.
I'm really just looking for a way to not plug any device into the switch and go from completely powered off to Atmosphere. Or maybe into a dirty sysNAND that I could run an app or something on the switch to reboot into Atmosphere.
Anyway, from what I've found online there's no easy way to do that yet so I might just cave and get a RCMloader. I was hopeful you guys had information I couldn't find via google.