1.Extract part 001.7zip
2.Put your internet off or disconnect your internet
3.Mount ISO with daemon tools
4.Run setup.exe
5.Copy crack from Codex folder to game folder
6.Open windows control panel->windows firewall->Advanced settings->Outbond rules
->new rules->Rule type and chose program->browse where is farmingsimulator2015.exe next->block the connection->next check all->next type name "ex : farm rule 1"->finish
7.Repeat step (6) for farmingsimulator2015Game.exe
8.Run the Game from Farmingsimulator2015Game.exe (not farmingsimulator2015.exe) or you can make shortcut to desktop