Yes, you can still change it.

1. Go to your school where you studied and check your name in class register.
2. If your name is correct in class register, request your Principal/HOD a letter for name correction.
3. Collect xerox copy of register, covering letter and yours marks list.
4. Go to ssc board directly, meeting resp ective officer. They will guide you.
5. After correction they will dispatch certificate to your school or will handover to you.
   
   This entire process will takes 3 - 7 working days.