Adewumi, made this known while testifying before the Presidential Election Petitions Tribunal in Abuja.
Buhari on Tuesday opened his defence against the petition filed by the PDP and its candidate, Alhaji Atiku Abubakar.
The PDP and Abubakar, alleged in their petition challenging the victory of Buhari’, that results were transmitted to a central server managed by INEC.
The two witnesses, Abba Kyari, two former secondary school mates testified to having obtained Cambridge University West Africa Examination Certificate in 1961.
NAN