If your switch is unpatched then firmware will never matter, it's unpatched for life.I homebrewed my Switch in late 2021 and I am just revisiting the space for my mate. I'm just not sure if the latest FW has prevented payload injection.
- I was totally typing in the wrong serial, I included the '4' from the prefix. Thank you for your reply.
- It's a friend's machine and confirmed serial.