you never need EmuNAND, but is always adviced to have the SYSNAND on a clean state, never install non sanct sofware on sysnand, and the EmuNAND also maintain your SysNAND clean and lower the wear of the chip.Thank you, sorry last question, would it still work on CFW I don't have to be using emunand to downgrade correct?
So always have a EmuNAND and work on it. but is you like use only SysNAND on practice is the same.