Pippo attended the Synod of Worms in 1076, and signed the document where he renounced his obedience to Rome.
He was present at the diet of Tribur (October 1076), where he was reconciled with the church by the legate, Bishop Altmann of Passau.
[1] After the death of Gregory VII in 1085, Pippo went on a pilgrimage to the Holy Land.
[3] Pope Urban II demanded he goes back to his episcopal office, an order he accepted.
Apparently he tried to impose on the clergy some rules, such as forbidding the acceptance of the sons of priests into holy orders.