$ ./allthefirmwares --help
Usage of ./allthefirmwares:
  -c	just check the integrity of the currently downloaded files (if any)
  -d string
    	the location to save/check IPSW files.
    		Can include templates e.g. {{.Identifier}} or {{.Name}} or {{.BuildID}}

    		For example try -d "{{.Name}}/{{.Version}}"
    	 (default "./")
  -filter string
    	filter by a specific struct field
  -filterValue string
    	the value to filter by (used with -filter)
  -i string
    	only download for the specified device
  -l	only download the latest firmware for the specified devices
  -r	redownload the file if it fails verification (w/ -c)
  -s	only download signed firmwares