download link: https://github.com/K4L0dev/Synology_Archive_Extractor
I coded a universal archive unpacking tool
supports all archive types:
0, # System
1, # Nano
2, # SecurityJson
3, # Spk
4, # ?
5, # SECURITYSCAN_DB
6, # ?
7, # ?
8, # /var/packages/syno_dev_token
9, # Wedjat
10, # ?
11 # Small Patch