Install HiveOS on ASIC S9i last firmware

Hello,
i’m a new miner, i have buy an Asic Miner Bitmain S9i
the firmware is the last July 2019,
when i try to install HiveOS, is not possible
give Error… and not install the OS

how is possible to make downgrade or other solution to install HiveOS

thanks ALL
Best Regards
Mattia