Mist is a macOS firmware downloader and deployment tool designed to retrieve official installation files and firmware images from Apple servers. It functions as a client for interfacing with Apple content delivery networks to obtain the binary images required for system recovery and device deployment.
The tool manages the retrieval of macOS system components through manifest-based version resolution to identify correct download paths. It ensures data integrity using checksum-verified checks and utilizes stream-based file writing to handle large images without exhausting system memory.
The project covers capabilities for macOS firmware management and system recovery, employing a concurrent HTTP request pool and asynchronous task orchestration to coordinate the fetching and verification of files.