In 1425, Fruzhin participated in Hungarian service in a joint Hungarian and Wallachian raid of the cities of Vidin, Oryahovo and Silistra on the Danube along with Dan II. Sigismund rewarded Fruzhin's military service with a noble title, entrusting him with the governance of Temes County and presenting him with a personal domain at Lippa. Fruzhin visited the Republic of Ragusa (Dubrovnik) and the leaders of the Albanian revolt in 1435 as a diplomat of Sigismund.[1][2]