Meanwhile, double tapping reset doesn't put node 2 into UF2 upload mode. And even if I flash the bootloader on there to get it into that mode, flashing the meshtastic uf2 on there doesn't result in it booting.

This hardware was great out of the gate, but now it's nearly non-functional.

So if you were thinking about following in my footsteps, I'd suggest you don't buy anything from RAK until/unless I can get this resolved.