Hello, I'll update my switch for the first time in a year this week-end. I got in september 2021, it's an unpatched V1 I hacked with the help of someone on Discord. Unfortunately that user has gone and I don't want to mess everything up

I've read the tuto to upgrade atmosphere/hekate and I think I'm good to go.
A question though: back in 2021 I did a backup but i'm not sure if it's the sysnand or the emunand... I never used my sysnand, always on emunand. Should i do a back of my emunand, and if so, how?