ipswDownloader is a shining example of a great utility that allows jailbreakers to download firmware (.ipsw) files easily and quickly. On top of that, it also tells you what jailbreak utility you should use in order to jailbreak (and/or unlock) your device. This is especially convenient if you're using something like PwnageTool that requires you to have an ipsw file in order to create a custom firmware bundle. This is highly common among unlockers.
This can be great for beginner jailbreakers that may feel a bit overwhelmed by the amount of jailbreak tools available. "What jailbreak utility do I need to use?" is probably the number one question we get asked here at TiPb. I really think this tool will come in handy for anyone from beginners to advanced users that really just want an easy and convenient way to download firmware files. Hit the jump for a download link and a quick walk-through.