Factory Reset may work here but you need to raise a question on Innosilicon's help desk from here.
Download a Manual for this miner from here
For any technical queries, you can drop a mail on this address
Download Firmware for Innosilicon A9 Zmaster
For people who are unaware of this Miner,
Innosilicon A9 Zmaster is one of the best Equihash algorithm miner available in the market. It can deliver a maximum hash rate of 50ksol/s with a variance of 6% for the power usage of 620W. It uses an A9 ZMaster ASIC chip for an unbeatable mining performance. One of the most profitable coins to mine with this Miner is ZCash.
Innosilicon is a world-class IP/IC designing company focusing on Mixed-signal IP's. There IP can be found on TV, phone, Set-top boxes, camera. This company is developing one of the most successful mining equipment. Furthermore, they have highly specialized teams in China and North America who are very supportive.
Read also - Overclock Innosilicon A9 Zmaster