For players using Skyrim Special Edition version 1.5.97 (often called the "Pre-Anniversary Edition" or "SSE" version), finding the correct Unofficial Skyrim Special Edition Patch (USSEP) can be tricky because the official mod page typically only hosts the version for the latest game update. The Correct USSEP Version
There are two legitimate methods to obtain the correct version of the Unofficial Skyrim Special Edition Patch for 1.5.97: Unofficial Skyrim Special Edition Patch 1.5 97 Download
Assuming you have already downgraded your Skyrim SE to 1.5.97, here is how to install the correct USSEP. For players using Skyrim Special Edition version 1
Q: Is USSEP 1.5.97 available on Bethesda.net for Xbox/PS4? Unofficial Skyrim Special Edition Patch 1.5 97 Download