Download it from GitHub: git clone https://github.com/ysard/mikrotik-backup-decoder (or use the Python script directly)
A refers to tools and methods used to view or retrieve data from a .backup file, which is MikroTik's proprietary binary format. Unlike standard text exports ( .rsc ), these files are not natively human-readable and are typically meant only for restoration on the exact same device or model. 1. Types of MikroTik Configuration Files