Sec. 3. (a) An application may not be filed under this article if the applicant could obtain the requested relief by means of an appeal under Article 44.02 and Rule 25.2, Texas Rules of Appellate Procedure.

(b) An applicant seeking to challenge a particular condition of community supervision but not the legality of the conviction for which or the order in which community supervision was imposed must first attempt to gain relief by filing a motion to amend the conditions of community supervision.

(c) An applicant may challenge a condition of community supervision under this article only on constitutional grounds.