You don't; Datel caught on and now prevents people from doing it. It only worked for previously allowed codes anyways. As has been said many times before, Powersaves is a dead end for getting anything beyond what they already offer.
In other news, I've updated the wiki with minor updates to the memory related data; the memories have an intensity, a memory type, (a variable word), and a feeling. PKHeX can output (and edit) the memory readout in its newest update.
No idea on what purpose the two remaining bytes serve.
There is still no method for injection unless you've got payload writing capabilities on a hacked 3DS.