Update sysNAND by CIAs could make your 3DS soft-brick, you can update your 3DS to 9.0.0J by SugarRush3DWhy won't this work for 8.1-9.2? And why wouldn't you? 8.1 has way less support compared to 9.2 (no Ninjhax whatsoever to begin with). Also, there are no Japanese games with 9.2.