The system is designed to prevent unlocking of certain key capabilities of the handsets (such as usable network or installation of unsigned operating system ), which has not been approved by Nokia or the network. The phones' system interface has changed over from previous generations to allow, for instance, flashing of the device via USB. This generation of Nokia phone basebands uses a new range of chipsets, bus systems and components as well as enhanced security mechanisms preventing manipulations of firmware and system configurations. ( May 2009)īase Band 5, abbreviated as BB5, is the current mobile baseband generation implemented on Nokia mobile phones and the replacement for prior DCT (Digital Core Technology) generations. This article may need to be rewritten to comply with Wikipedia's quality standards.
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