iFly Releases the Advanced 737NG for Prepar3D v5. The iFly Development Team, in partnership with Flight One Software, has officially released iFly Jets Advanced Series – The 737NG, exclusively for Prepar3D v5.2/v5.3. This base package, which contains the -800 and -900 variants, is iFly Development Team’s most advanced addon to date. The iFly Development Team has dug deep into the features within the Prepar3D v5 platform to bring you these new features: Supports Prepar3D v5.2/v5.3 and DirectX 12 Built around Enhanced Atmospherics (TrueSky) All New High Definition Virtual Cockpit models. Full PBR materials Virtual cockpit based on P3D v5.2 updates.