Navifirm is peace of software that used to download original Nokia firmware from Nokia servers. But Navifirm has been blocked by Nokia. However after several months its back. But this time Navifirm has not been connected to Nokia servers. Now its has a its own duplicated server , a mirror of Nokia server still providing original firmware. Its called Nivifirm Plus. navifirm is working again! Browsing the list of BB5 will be only available for donators only, nothing expensive only 3 euros.
Download from here
