You must dump it from a real Xbox 360 console that you own using a NAND reader. If you are looking to unban a console, you are entering a cat-and-mouse game with Microsoft security enforcement that usually results in wasted money and banned consoles.
In the early 2010s, a handful of XDK (Xbox Development Kit) KVs leaked. These KVs have no expiry and are very hard to ban. However, Microsoft has since blacklisted all known devkit ranges. Any "generator" claiming to output devkit KVs is lying. xbox 360 kv.bin generator
Generating a kv.bin file involves complex cryptographic operations. The Xbox 360 uses a combination of public and symmetric key cryptography. For instance, the console utilizes elliptic curve cryptography for key exchange and AES (Advanced Encryption Standard) for data encryption. A kv.bin generator would need to handle these cryptographic operations accurately to produce a valid file. You must dump it from a real Xbox