He was the eldest son of Sultan Mahmud Mirza and his wife Khanzade Begum, daughter of Mir Buzurg, ruler of Termez.
Sultan Masud marched against him, but didn't risk to cross the Amu Darya and finally retreated to Hissar.
Having learned about the approach of Bayqara's troops, he fled to Samarkand to his younger brother Baysunkar Mirza.
[2] In June 1496, he besieged Samarkand in alliance with his brother Sultan Ali Mirza and his cousin Babur, but three months later he retreated for Hissar, taking as his wife the daughter of one of the sheikhs.
[3] Some emirs distanced themselves from him, and in 1497, Hissar was captured by his former supporter Khusroe Shah and his brother Baysunkar Mirza.