The "wheels fell off" a plan by three men to use a truck to break out of the Port Augusta Prison in South Australia's mid-north, a court has heard.
Trevor John Brooks, Scott Gavin Charters and Benjamin Christopher Glen have all had their jail terms extended after the botched escape bid in September last year.
District Court Judge Stephen McEwen said the trio abandoned their bid for freedom when the truck they planned to use became bogged.
Judge McEwen said the attempted escape was unsophisticated.
"It did not get very far before the wheels fell off the whole enterprise," he said in sentencing remarks delivered in Port Augusta and published online.
After abandoning the truck the men climbed on scaffolding where they spent some time before negotiating with the prison manager to come down.
Both Brooks and Charters pleaded guilty to attempting to escape lawful custody while Glen was found guilty of the same charge after a trial.
Judge McEwen jailed Glen for 12 months, Charters for almost 11 months and Brooks for seven months, the shorter periods reflecting discounts for entering guilty pleas.