kendala extract file

[ndeso17]

pak bagaimana cara extract nya, kok keluarnya begini?

tkjbulakamba@tkjbulakamba:/media/tkjbulakamba/Data/STB/command_tools_update/original$ bash extract-system.sh

7-Zip [64] 16.02 : Copyright (c) 1999-2016 Igor Pavlov : 2016-05-21
p7zip Version 16.02 (locale=en_US.UTF-8,Utf16=on,HugeFiles=on,64 bits,4 CPUs Intel(R) Core(TM) i3-2310M CPU @ 2.10GHz (206A7),ASM)

Scanning the drive for archives:
1 file, 47185920 bytes (45 MiB)

Extracting archive: system.7z.001
ERROR: system.7z.001
system.7z
Open ERROR: Can not open the file as [7z] archive

ERRORS:
Unexpected end of archive

Can't open as archive: 1
Files: 0
Size: 0
Compressed: 0
done

[ndunks]

coba di cek file sizenya berapa, barangkali corupt.. atau program 7z nya beda