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KoopTheKoopa
KoopTheKoopa
i discovered the file strcuture. here:
C: 
typedef struct
{
    u32 sig; // always 0x48415941 ('HAYA' in ASCII)
    u32 size; // Size of the whole file
    u32 crc32; // CRC32 of the file (it does the checksumming after the CRC32)
    u32 width; // width of the image
    u32 height; // height of the image
    u32 unk; // This is always 0x10000000
    u8 pad[8];
} photo_file;
KoopTheKoopa
KoopTheKoopa
the rest is the rgb565 texture data
KoopTheKoopa
KoopTheKoopa
i even made a small tool that extracts the image