Orcad 10.5 License File
No. The signature line is cryptographically generated by Cadence. Without their key, any modification invalidates the license.
: During the OrCAD setup, select the "Install License Server" option and browse to your edited license.dat file. Orcad 10.5 License File
Run lmstat -a from the license manager directory. A successful output shows features available. Orcad 10.5 License File