Use (free, open-source) or WinRAR :
| Symptom | Likely Cause | Fix | |---------|--------------|-----| | “” or “ Checksum error ” | Corrupt or incomplete part. | Re‑download the indicated part; verify its checksum. | | “ File not found ” after extraction | Missing subsequent part(s). | Ensure every .partN.rar file is present. | | Extraction halts after a few MB | Disk space shortage. | Free up space; extract to a drive with enough free capacity (often ≥ 1.5 × archive size). | | “ Unsupported archive ” | Using an outdated RAR version (< 5.0). | Update your extraction tool to a recent version (RAR5 support required for newer archives). | | Extraction succeeds but the output looks garbled | The archive contains a binary format (e.g., an ISO, a firmware image) you tried to open as text. | Use the appropriate application for the extracted file type. | H-RJ01186021-v1.04.part1.rar