Unofficial Skyrim Special Edition Patch (USSEP) for version is the definitive community-driven fix for the pre-Anniversary Edition version of the game. It is widely considered essential for "1.5.97" players who have used the Downgrade Patcher to maintain compatibility with older Core Features & Design
If you need the actual download link for USSEP 4.2.5b, let me know and I can guide you to the exact Nexus page path. Unofficial Skyrim Special Edition Patch 1.5.97