I was innocent and the judge released me on free...

Although your query is not clear, here is the following information:
You have to go to court to get a formal affidavit stating the final position in the case and that you are not accused.
However, the judge released you for free and the case is still open.
You have to follow up on the case until it is finally closed.
To make sure that a final verdict of your innocence is issued