I advise you to contact iium university for doing postgraduate, see if they will accept your application,after that you can try to change your permit into student pass.
References :

Hello if u r planning to get settled in malaysia then contact me immediately. i can arrange all kinds of visas for malaysia. Employment Visa, Dependent Visa, General Worker Visa, Overstay Application, Company registration, student visa, special pass, etc.Be assured our aim to satisfy each client on individual basis to their maximum satisfaction in shortest possible time and to take care of them from arriving in KL till their accommodation and filing of papers is completed. We also give pick and drop service from airport to hotel and we also do hotel reservations. E-Mail: malaysiavisasolution@yahoo.com