Make curl follow redirections. wget already does.

user_tools/linux/recovery.sh

 #!/bin/sh
 #
 # Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 # This attempts to guide linux users through the process of putting a recovery
 # image onto a removeable USB drive.
 #
 # We may not need root privileges if we have the right permissions.
@@ skipping 173 matching lines @@
   url="$1"
   filename="$2"
   resume="${3:-}"
 
   DEBUG "FETCH=($FETCH) url=($url) filename=($filename) resume=($resume)"
 
   if [ "$FETCH" = "curl" ]; then
     if [ -z "$resume" ]; then
       # quietly fetch a new copy each time
       rm -f "$filename"
-      curl -f -s -S -o "$filename" "$url"
+      curl -L -f -s -S -o "$filename" "$url"
     else
       # continue where we left off, if possible
-      curl -f -C - -o "$filename" "$url"
+      curl -L -f -C - -o "$filename" "$url"
       # If you give curl the '-C -' option but the file you want is already
       # complete and the server doesn't report the total size correctly, it
       # will report an error instead of just doing nothing. We'll try to work
       # around that.
       err=$?
       if [ "$err" = "18" ]; then
         warn "Ignoring spurious complaint"
         true
       fi
     fi
@@ skipping 633 matching lines @@
 prompt "Shall I remove the temporary files now? [y/n] "
 read tmp
 case $tmp in
   [Yy]*)
     cd
     \rm -rf ${WORKDIR}
     ;;
 esac
 
 exit 0