The AVH-P3450DVD is over a decade old. Firmware will not add new features like Apple CarPlay or Android Auto – that requires new hardware. However, an update can significantly improve:
: Plug the drive into a computer. Format it using the FAT32 file system. A quick format is acceptable, but ensure all existing files are entirely erased. pioneer avh p3450dvd firmware update
: Touch the Gear/Settings icon followed by the Wrench icon. The AVH-P3450DVD is over a decade old