The specific title update version. In the Complete Edition ecosystem, patch 1.1.3.0 is highly valued because it retains structural similarities to older patches, making it optimal for modifying game scripts.
Grand Theft Auto IV: Complete Edition is the definitive compilation released by Rockstar Games. It bundles the original adventures of Niko Bellic alongside the standalone episodes, The Lost and Damned and The Ballad of Gay Tony . GTAIV4CE.1.1.3.0.part1.rar
Historically, modders downgraded their Steam copies to 1.0.7.0. However, with tools like now providing superior fixes and performance on the CE, many in the community consider the 1.1.3.0 build the new standard for modern modding. The "4CE" file you have represents this shift. The specific title update version