I can write a deep review, but first a quick clarification I must make a reasonable assumption: you want an in-depth review of the "Fling" trainer for Call of Duty: Black Ops Cold War on PC (history, features, how it works, risks, detection/anticheat interactions, and whether it still works after patches). I'll proceed with that assumption.
It is rarely easy to say this in the cheating community, but: The Fling trainer for Call of Duty: Black Ops Cold War is dead. call of duty black ops cold war pc trainer fling patched
Cold War has aggressive "heartbeat" checks. If the trainer tries to lock a value (like God Mode) while the game is performing a server check, the game will instantly close. I can write a deep review, but first
Note that this trainer is strictly for Single Player mode only. Using it in online multiplayer or Zombies co-op can lead to bans via Treyarch Anti-Cheat (TAC). Download and Installation Cold War has aggressive "heartbeat" checks