GTA 5 Xbox360 Exclusive content for PC

There is a topic like exclusive content for GTA 5 on PC for players returning from Xbox 360 or PlayStation3. What is the essence. if you have not flashed the console with the license zoologists in the GTA account RockStar will I get additional content in the version on the PC. I'd phoned someone on Skype or discord and that someone did this. For a fee.