Various community forums and specialized sites like Xbox 360 HUB or private sellers often sell unbanned Keyvaults. Proceed with caution and only use reputable sources to avoid buying "shared" KVs that will get banned quickly. How to Install a KV.bin on Your RGH/JTAG
A kv.bin is a unique file found in an Xbox 360's NAND flash memory. It contains the console's unique identity, including its , Console ID , and DVD Key . Microsoft uses this information to identify and, if necessary, ban consoles from Xbox Live for violating terms of service (e.g., using homebrew software). Why People Download Them Kv.bin Xbox 360 Download