Hello, friend.
As Gustavo.HdezF said.
You should contact your ISP to obtain software.
Huawei ONT needs to be used with OLT and network management. The version must match the model. If the wrong version is used, ONT will not work.
Huawei ONT firmware involves information security and will not be released randomly.
If you need to download firmware/software, for your network security, please contact the operator or sales channel to obtain the correct ONT firmware/software.
For details about how to obtain Huawei ONT software, click
How to get the firmware or software of Huawei ONT
For more information about the HS8546V5, click HS8546V5.
Thanks.