SPYRAL破解组织对Quartus II 9.1的完全破解 Install the application. Unzip the crack into the \altera\91\quartus\ directory and overwrite folders/files. Run the licgen.exe to create license.dat Launch the program. When asked for the license, "Specify valid license file", and browse to the license.dat You can do the same procedure (or verify the license status) from the "Tools", "License Setup" within the program. Enjoy.