I recently added a 3.5-inch screen, but due to the placement, it can only be used in portrait mode. I searched everywhere, but couldn't find any suitable portrait firmware. The HS0AWO firmware could be used, but its Chinese support is poor; it produces gibberish and doesn't have an HMI file for modification. So, I'm asking for help: does anyone have a useful, readily available portrait firmware with good Chinese support that they would be willing to share?