They still havent enabled Digital Certificate upload .. You need to download the ITR V form and sign it and then manually submit it to nearest IT Office ...
You'll get ITRV form after you 've uploaded the XML from whichever form (ITR1 .. ITR2 ) you have to submit ..
And what are you waiting for ..?? Today is the last day .. It will be very crowded .. .. You can use Moneycontrol 's service to file your return too ..