Defendant pled guilty to driving while license suspended, and was sentenced to 6-year imprisonment, but mittimus stayed for 30 months with recognizance bond. Court vacated sentence sua sponte 45 months after entry, and sentenced Defendant to 30 months probation. Court granted State's petition to revoke Defendant's probation, and imposed 6-year sentence of imprisonment. Court's order vacating original sentence and imposing 30 months probation was void, as court had no jurisdiction once 30 days had elapsed from date of sentencing. Court had authority to impose 6-year imprisonment, but did not have authority to stay mittimus for 45 months, rendering that portion of sentence void. Stay was essential part of plea agreement, and thus Defendant is allowed to withdraw her guilty plea. (LYTTON, concurring; SCHMIDT, specially concurring.)