You do not need to download 100GB again. You only need to swap the crack files.
For Black Ops 3, two cracks work well for avoiding UI errors:
Step 1: Download "BO3 PLAZA crack only" (about 15MB). ui error 27393 black ops 3 cracked
Step 2: Replace steam_api64.dll, steamclient64.dll, and BlackOps3.exe in your root folder.
Step 3: Delete Documents\Call of Duty Black Ops III\players\bindings_*.cgp to reset controller/UI bindings. You do not need to download 100GB again
Step 4: Launch the game. The first launch may take 2-3 minutes – this is normal as the crack rebuilds UI caches.
UI Error 27393 ultimately highlights the instability of pirated software. An official copy of Black Ops 3 (often on sale for $20–$30) provides: Step 1: Download "BO3 PLAZA crack only" (about 15MB)
Unlike retail versions, cracked releases modify or bypass executable files, DLLs, and license checks. UI Error 27393 often arises because: