Complex sentence: OtherOS is a feature available in the first versions of the PlayStation 3 gaming console that allowed Linux operating systems to be installed on the system, which was made unavailable in newer models and removed from the oldest ones through a firmware update by Sony.
Split into simpler sentences: OtherOS is a feature available in the first versions of the PlayStation 3 gaming console that allowed Linux operating systems to be installed on the system. This feature was made unavailable in newer models and removed from the oldest ones through a firmware update by Sony.