Nintendo Switch (Osmaston DE24)

I'd really like a UNPATCHED NINTENDO SWITCH. Years 2017--2018 would be ideal. It's for my son. He,s a really techy kid and has been obsessed with Pokemon since he was little and he's 18 now. His old one developed a fault which he's attempted to fix but it didn't go as planned,so now he's lost all his growth and moddded stuff and is devastated. If anyone can help I'd really appreciate it. Thankyou.