ipsw

ipsw is one CLI for Apple firmware work, organized into command groups (download, extract, dyld, kernel, macho, fw, sb, ent, diff, symbolicate, idev, ...). Install it with brew install blacktop/tap/ipsw (other platforms: github.com/blacktop/ipsw releases). Remote and download commands need network access; idev needs a USB-connected device. This skill describes ipsw as of commit 6e0291a8f (after release 3.1.725); on 3.1.725 and earlier, apply the "Older releases" table below. Flags change between releases: ipsw version shows the installed build, and ipsw <group> <command> --help is the source of truth. Commands marked 🚧 in --help are works in progress.

Examples use these shell variables (POSIX sh/bash/zsh syntax):