March 14 (Reuters) - Big Un Ltd BIG.AX
* Revise previous revenue guidance for cash receipts from customers of $4.27m in quarter to $5.20m by 31 march 2017
* Cash flow positivity will be maintained in FY 2017
* Says it will substantially exceed $15.5m guidance for full FY17 Source text for Eikon: ID:nASXbx77Yj Further company coverage: BIG.AX