: If you receive a "CRC failed" or "Unexpected end of archive" error, Part 4 might be corrupted. You can try using the "Repair archive" feature in WinRAR to fix the segment.
: You must initiate the extraction process from "BLACK.DAY.v0.75.part1.rar" . Software like WinRAR or 7-Zip will automatically detect and "stitch" the subsequent parts together to recreate the original game files.
: Confirm that all parts have identical names except for the part number. If they were renamed during download, the extraction utility may not recognize them as a sequence. Troubleshooting