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In the tool, choose the network adapter that is connected to your ONT. One guide suggests you should then select "Upgrade" mode. If you are not trying to patch the Shell access, you could select "V5 Enable". For a pure firmware upgrade, you will likely need to load your .bin file. The interface of these tools is often in Chinese, which can be challenging.
If you do not have a backup, you must contact your ISP to provision your PPPoE credentials and VLAN settings manually. Huawei Hg8145v5 Firmware Update
This is the preferred method for official updates. In the tool, choose the network adapter that
Huawei does not host public firmware for the HG8145V5. You must find it via: In the tool
