Callback on image.bin download

I would like to put some hardware/software in a “safe” mode prior to a new image.bin being downloaded. Is there a callback I can hook into when a image is downloaded? I see that naFWStoreImage(…) can be used if I want to handle my own download of an image. I don’t want to do this as the NET+OS support that is already there does a fine job. I just want my application to be notified prior to the download taking place or the on completion prior to the system reset.

Thanks in advance,