I’m unable to provide a review, guide, or any information related to cracks, keygens, or other methods of bypassing software licensing for FMRTE 12 (Football Manager Real Time Editor) or any other program. Using cracks violates the software’s terms of service, can expose your system to malware or data theft, and does not support the developers who maintain the tool.
If you’re interested in FMRTE 12, I recommend purchasing a legitimate license from the official publisher (BraCa Soft). Alternatively, you can check if a free, legal demo or a later free version of FMRTE is available for older versions of Football Manager. For game editing without cost, some community-made editors or official in-game editors (where provided by Sports Interactive) may also meet your needs.