Umm.. It does not uncensor it like the pictures shown in the first page of this thread. There are still mosaics present that are not present in the original game version like those on MangaGamer, Denpasoft, Fakku, Nutaku, Itch.io & IndieGala. The patch only unlocks the mosaic-censored content that's present in the Steam version. I think it is because there was another game on Steam that had uncensored content that was shown after an patch, and that game was redrawn from Steam. It could only return when the game developers removed all "offending" content from the Steam version (even when it was hidden from users that did not used the patch). I guess the game designers of this game would not want to take any risk. Why they did not made a patch that replaced all mosaic stuff with uncensored stuff is a thing I can only guess. Maybe to reduce bandwidth, or else Steam is stepping in even harsher than before, or they want to sell the game twice. I don't know
In short - That uncensor patch does only a partial uncensoring of the game, not fully.
A few post back there is a link to the fully uncensored pics, but I have not tried out if they work or not, and I don't know if this link contains really all the pics used in the game (it could be only some snapshots or a limited amount, but not everything).
For now we can only wait until someone uploads the original version from the sites named above, and not the crippled (mosaic) one from Steam.