Security researchers sometimes publish "papers" or "proof-of-concept" (PoC) reports on specific software versions if they discover vulnerabilities like DLL Hijacking or Insecure Permissions .
In its official documentation, version 1.1.0 introduced specific features for backing up, restoring, and transferring WhatsApp data between iOS devices and PCs. FonePaw WhatsApp Transfer for iOS 1.1.0
Instead, "1.1.0" often appears in technical databases in the context of security research. Specifically: FonePaw WhatsApp Transfer for iOS 1.1.0