Complex sentence: NR-13 and NR-18 (USK 12 and USK 16 in Germany), and the NR-13 version can be upgraded to the NR-18 via a software patch.
Split into simpler sentences: NR-13 and NR-18 (USK 12 and USK 16 in Germany). The NR-13 version can be upgraded to the NR-18 version via a software patch.