Judge Tom Broadmore heard in Wellington District Court today (Wed) that Brooks did not fulfil that sentence either.
His lawyer said that was partially due to health reasons - he had had one hernia operation and had another to come - and "quite major financial issues'' which meant he had been unable to find a suitable address for electronically monitored detention.
Brooks now felt "a short sharp sentence'' would be the best way to get his punishment over with, the judge was told.
He wished to study at Victoria University and wanted the matter behind him so he could pursue that.
Judge Broadmore said Brooks had been assessed as needing counselling for alcohol and drug use.
From the dock, the accused informed that he had already kept a required appointment
with Care New Zealand.
"I was declared no longer a drug addict or an alcoholic. I was very pleased about that.''
The only way the community could hold Brooks accountable for his anti-social behaviour and be protected from him was a prison term, during which he could get engaged in rehabilitation, said the judge.
"It is up to you. If you don't change your ways you will have a very sorry life.''
Brooks - subdued in mood and look compared with earlier court appearances, when he sported eye-catching hair colours and styles, along with numerous facial piercings - asked politely if he could apologise to a police officer who he was convicted of kicking in the stomach.
Judge Broadmore suggested he send a letter through his lawyer.
The assault against the officer occurred in Wellington's Manners Mall last October, when Brooks was drunk. He had also admitted disorderly behaviour likely to cause violence in the early hours of the same Sunday.
Today he got two months behind bars for the assault and one month, to be served concurrently, for the second charge.
The rest of the six months' total imprisonment was for breaching community work and supervision.
With a brief glance at a handful of friends in the public gallery, Brooks was led quietly off to the cells.
Following the 2010 offending, he attracted "vampire'' headlines in New Zealand and overseas. He and three other young people were heading from a Hataitai party across Mt Victoria in the dark when Brooks grabbed the victim from behind in a chokehold, biting the teenager "because he hit on my missus.''
Although admitting he was drunk, Brooks later denied drinking the victim's blood. The teen fell unconscious and woke to find bites on his arms, chest and back which were bleeding and swollen.
The 18-year-old, whose name was suppressed, ended up in hospital with infected wounds.
