Tax payable after submitting returns

I've filed my IT Returns yesterday with "tax payable" option and in the Final ITR there was some tax amount which I had to pay.

I clicked submit and my form got submitted without asking me to pay the money for balance tax.

After that, I've paid that balance amount and filed a revised return under 139(5) immediately with  "Nil Tax" option.

Please let me know if this is the right thing.

Else what shall I do?

Which ITR V (Original/Revised) should I send to IT Dept?