When Apple added iPod Touch/iPhone bookmark synchronization to iTunes they, for whatever reason, didn’t include Firefox as an option. As it stands right now you can synchronize your iPhone bookmarks with Safari (available on Windows and Mac) or Internet Explorer (available on Windows).
For all of the Firefox users out there we’re going to show you some tricks so that you never have to leave Firefox for managing your iPhone bookmarks. The best way that we came up with was utilizing the Internet Explorer favorites as the backbone to syncing your Firefox bookmarks. That means in iTunes you’ll want to set Internet Explorer as the source to get the bookmarks from, and these various methods will take it from there…
Syncing iPhone Bookmarks with Firefox