I made a big mistake in paying my tax and filing return by paying tax for assessment year 2010-11 instead of 2011-12 and filing return also for 2010-11 instead of 2011-12. However, I just discovered that i filed for wrong assesment year. so i decided to file revised return as last year i didnot have any income,as i just paid the tax for wrong year.When i try to upload revised return it shows message, since you have already uploaded return go to revised option.I wish to upload revised return correctly and then send ITR 5. Kindly advise how to change the uploaded return , i mean how to upload revised return and claim refund for lasy year. so that i can file for new year. where is that option to upload revised return. Kindly help.