The file titled refers to a cracked or "full license" version of MikroTik RouterOS version 5.20, which was originally released around 2012 [ 0.5.1 , 0.5.8 ].
it also comes with some risks and drawbacks, such as security issues, legal problems, and lack of support. v5.20 released - General - MikroTik community forum Mikrotik-5.20 Ed Full License Level 6-by InXan.rar
While this version provides a powerful, unrestricted toolkit, it is important to understand what you are installing and the potential risks involved with using non-official software. What is the Level 6 License? "Mikrotik-5