Hacking Help updating Switch

[Carlos_DobleC]

I've been away from the scene for a few months waiting for it to reach the comfort of 3DS, but Smash has come out.
Can someone explain to me what I should do to go from 2.3 to 6.2 while maintaining a CFW or the possibility to downgrade later?

 

[Draxzelex]

Use the homebrew application ChoiDujourNX to update your firmware without burning fuses. Fuses prevent downgrading in case you forgot. The way ChoiDujourNX prevents fuses from being burnt is by enabling AutoRCM so do not disable it when ChoiDujourNX is installing the firmware or else you will burn fuses and be unable to downgrade back to 2.3 or higher.