08 April 2013
SORRYYYYYY, VERY SORRYYYYYYYY , BECAUSE TIME IS OVER, AS YOUR DEADLINE WAS 31/03/2013 FOR A.Y 2011-2012. SORRYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYYY. Thanking You, PALASH RAKSHIT.
29 May 2013
No doubt you cannot file your return online for 2011-12 but you can file it physically if there is refund receivable by you. In case there is tax liability even then you can file it by payment of taxes and by issue of notice u/s 148 the said return can be regularised.