firmwhere.sh

#!/usr/bin/env bash
# -----------------------------------------------------------------------------
# Name    : firmwhere
# Purpose : Lists and (optionally) downloads all iOS firmware updates
# Based on: https://gist.github.com/jordanmerrick/3447610
# -----------------------------------------------------------------------------

# set up a temporary file
file="$(/usr/bin/mktemp -q -t firmwhere)"

# fetch the XML file from Apple's update server
curl -sS http://ax.phobos.apple.com.edgesuite.net/WebObjects/MZStore.woa/wa/com.apple.jingle.appserver.client.MZITunesClientCheck/version |

# display only URLs
sed -nE 's#^[[:space:]]*<string>(http://.+ipsw)</string>$#\1#p' |

# ignore recovery files
grep -v Recovery |

# sort alphabetically and strip duplicates, then dump to temp file
sort -u > "$file"

# output filename
echo "$file"

# -----------------------------------------------------------------------------
# uncomment to download *all* the files (139 as of 2014-03-25) to $PWD
# -----------------------------------------------------------------------------

# # use cURL
# while read url; do
# 	curl -O "$file"
# done < "$file"

# # use wget and skip downloaded updates
# wget --mirror --no-directories --input-file="$file"