let me help you here. I have stated before STAY on whatever firmware your NS is on. DONT update oficial firmware
ChoiDujourNX is you answer: it is a Homebrew Application. ChoiDujourNX will allow you to update a banned Switch console or a Switch that’s not connected to the internet to the latest firmware available..
what that means is that even thou you are on 7.x.x OFICIAL Firmware. with ChoiDujourNX you can install resent firmwares example 8.0.1 and run games that require said firmware.
your switch will remain in official firmware 7.x.x but in CFW it will be 8.0.1
that being said you asked me what was the most stable. and I answered that
if you were to ask me what version is the best to play recent and old games the answer to that is 8.0.1. it will run homebrew apps and also it wll run the-latest-newer-most recent-games
You need to be very specific in your question as i cant guess what you want
whatever Official firmware your NS is on, there is NO way to go back to a lower firmware
in your case there is no way to go back to 7.x.x you are stuck on 8x.x.
No need to panic. 8.0.1 is stable enough to play games and use some hombrewapps.
8.0.1 will allow you to play older games aswell as the newer ones. I am on CFW 8.0.1 and I have NO need to back to 7.x.x ( newer games require new firmwares to run. there is no need to stay on 7..x.x if you wont be able to play 8.x.x games )
downloading a game does not equal updating firmware. something must have happened
go to setting and disable automatic updates.
what is the reason you want to go back to 7.x.x so bad ?
Stay on 8.0.1 dont update anymore.
eventually 9.x.x and 10.x.x will come out and we all will have to update to play newer games using ChoiDujourNX . so no need to worry