I haven't seen any reports no. However, downloading from eShop DOES cause a ticket check for the game you're downloading if you didn't buy it there is a good chance you could be banned if you downloaded the DLC/Update through the actual eShop page. Updating a game from the HomeMenu doesn't cause a ticket check, it just checks the current installed version so update games that way. Visiting the eShop page will again cause a ticket check, and require you to download the full game as an update (not true for all games). Personally, I refuse to download anything from eShop for a pirated game. Find a warez site and download the DLC/Updates as stand alone .CIAs and install them that way. In that regard, visiting the eShop after doing so will cause all Illegitimate DLC/Official Themes to disappear.has anyone been banned downloading updates from nintendo's eshop. like for example Puzzle & Dragons Z + Super Mario Bros Edition
Rule of thumb as of 11.8, if the game is pirated NEVER visit it's eShop page. Or the eShop at all unless you plan on making a legitimate purchase.