13 December 2013
Tushar, Surely you can do it. For this, you must download the NSDL Conso file from TRACES for the required Quarter and open the .tds file and then make the needed correction.
14 December 2013
No penalty will be levied for correction ETDS filing. Penalty is levied on the Regular ETDS statements filed after the due date from 01-07-2012. So you may file correction ETDS statements for the FY 2008-09.