This checks whether /dbs/import.db exists (or is initialized) on the media indicated by the specified Media Type.

The output u8 remains 0 if import.db exists.

Media Type must be either SD or NAND. If Game Card is specified, this will always return 0xD8C0801E and set the output u8 to 2 (not supported).

Additionally, 0xE0A046DF is returned if import.db does not exist on the media.