Ensure the file ends in .zip . Do not unzip it. (Minecraft reads zips as texture packs).
However, caveat emptor (let the buyer beware). The phrase "repack" should raise red flags. Repacks are often obsolete, broken, or infected with token grabbers. You are better off seeking the original X-Ray Ultimate texture pack for 1.8.8 from a trusted source like PlanetMinecraft or CurseForge.
If you have typed this phrase into a search engine, you are likely looking for a way to gain a competitive edge in Minecraft version 1.8.8. But what exactly is this file? Is it safe? How do you install it? And most importantly, are you risking your account?
In Minecraft, go to Options > Resource Packs . You will see the pack on the left side. Hover over it and click the arrow to move it to the right side (Active). Click Done .
