Simply install (when you install votes incompatibility with the phone, you can ignore).
After starting the Mobile Signer on your phone just enter in the field Sis File path to the application you want to ocertifikvoat eg E: \ Install \ game.sis
Box Key File Enter the path to your certificate with extension KEY.
Box Cert File Enter the path to the certificate extension CER.
Subsequently, click on Options and select Sign. That is all. The directory certifikovanýcm create a new file, ocertifikaový sisx extension.