Ensure every volume of the set (part1, part2, part3, etc.) is in the same directory on your computer.
Created using archiver software like WinRAR or 7-Zip , this format reduces total file size to save storage space. A1189BMD.part3.rar
Open only the first file ( A1189BMD.part1.rar ) using an archiver like WinRAR or 7-Zip . Ensure every volume of the set (part1, part2, part3, etc