Change in particulars of din

Please help.

A person has a DIN approved in 2010. But he never used that DIN number. 

Now he is using that DIN and on verifying the DIN details on MCA site a error is coming that there is a mismatch with your PAN details. (Name & Father's name mismatch with PAN details)

My question is that, which form should be filed for correcting the mismatch. 

DIR 6 or DIN 4....