Belated Return is defined under section 139(4) which states that:
Any person who has not furnished a return within the time allowed to him under section 139(1), or within the time allowed under a notice issued under section 142(1), may furnish the return for any previous year at any time before the expiry of one year from the end of the relevant assessment year or before the completion of the assessment, whichever is earlier.
And revised return is defined under section 139(5) which states that:
If any person, having furnished a return under section 139(1), or in pursuance of a notice issued under section 142(1), discovers any omission or any wrong statement therein, he may furnish a revised return at any time before the expiry of one year from the end of the relevant assessment year or before the completion of the assessment, whichever is earlier.
Thus as per section 139(5) on revised return, it does not cover return filed under section 139(4) - belated return. Hence we cannot revise the return which is filed late i.e. after the due date mentioned in section 139(1) & in notice under 142(1).
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