29 June 2013
If digitally signed while e-filing , then no need to sign. . If the return has been filed without digital signature, ITR-V is required to be signed. Further, it has to be sent to CPC Bangalore. .
30 June 2013
Yes..if if return was filed with out DSC..assesse need to sign on Acknowledgement ITR-v and need to send to CPC bangalore via speed post with in 120 days from the date of filing..other wise return become invalid