Oh,it's new method?system settings -> other settings -> system update
it's not that confusing. it probably does on the surface, but it's overall much easier + safer + faster.
emunand/rednand is no longer used for any part of the guide, instead everything happens entirely on sysnand (which is possible due to the new CTRNAND-based method).
Interesting,what is it?
Is there a page or thread for it(except for this)?