To access the content, you need 7-Zip (Windows) or an equivalent tool like Keka (macOS).
To extract the content, you must have all parts ( .001 , .002 , .003 , etc.) located together in the same folder [1].
Ensure SignalComplete.7z.001 , SignalComplete.7z.002 , and SignalComplete.7z.003 are in the same directory.