Hmm, it seems that this is a great app, but I'm a little suspicious. (Sorry for that.) If it updates the camera firmware, does it change it back when uninstalled? Exactly what does it do with the camera firmware? Does the Camera app receive any benefits of all these stuff? If I don't want HDR (because of the time needed to process it), can I turn it off? Anyway, why don't you upload it to extras-devel? It would be much more easy to update it, for all of us.
It will be there, soon.