It was Odinga's legal challenge that led the court to nullify the August 8 election that President Uhuru Kenyatta won. He alleged that vote results had been hacked into and manipulated.
The Supreme Court also ordered a new election, which is set for October 26. It was the first time a court had overturned the results of a presidential election in Africa.
Odinga said "there's no intention" on the part of Kenya's election commission to undertake any changes before the vote.
He said the commission had "stonewalled" reforms the opposition had sought and wasted time in "public relations exercises" meant to create an impression of "motion without movement."
Among the reforms Odinga had demanded were the replacement of suppliers of equipment used to transmit election results and the replacement of electoral officials the opposition claimed were complicit in electoral fraud.