It took two trials and three years for Trent Hapuku to say he was responsible for the death of a 5-month-old baby.
He was sentenced to nine years' jail in June 2012 for the manslaughter of his partner's son, Mikara Reti.
Mikara died in January 2011 after being fatally assaulted in a Flaxmere sleepout.
Hapuku maintained his innocence during two trials. The first jury was unable to reach a verdict but the second found Hapuku guilty at the completion of the second High Court trial in Napier.
During the trial, the Crown said through evidence of timing and medical experts that only Hapuku could have been responsible for the blunt force trauma which split the child's liver, causing fatal internal bleeding.