My point is that you don’t need emuNAND to achieve that.Then please explain what will be detected by nintendo?
The emunand is a full copy of the sysnand.
All patching occures there on sdcard. The eMMC wont get touched during that process.
Therefore there wont be any trace on sysnand.
Remember to keep your device offline while in CFW!
For Online Usage:
- Power down your device
- Remove the sdcard containing cfw
- bootup to Stock FW
Again: How should they detect that you've used an cfw before?
Never use Atmosphere or any other cfw online
Boot into CFW on sysNAND - remember to disable online, maybe use a different SD card.
Boot into stock FW on sysNAND - clean fw, no trace of CFW.
For example, Luma 3DS doesn’t need to make any permanent changes to the FW. Patches are applied on the fly. Remove boot.firm and you get a clean stock FW.