From Symbian-toys:
NAVIFIRM is the all-purpose tool for downloading Nokia firmware images, obtaining lists of product codes, and finding the right product code for your phone. NAVIFIRM downloads all this straight from Nokia's servers so you don't have to wait for people to post data packages and lists of product codes. NAVIFIRM is useful for end users to find product codes to use with NSS or NSU, journalists to be the first to know when new firmware hits NSU, developers to download ROM images for extracting files, and care suite, phoenix, or box users to download ROM images to flash additional NSU servers can be added by editing Main.cs in the source code.
