: Firewalls and antivirus software often block multicast traffic and should be temporarily disabled to ensure the data transfer completes. The Flashing Process Preparation : Connect the PC directly to the ONT’s Tool Configuration

Move settings between devices during hardware upgrades. Common Flash Tools for Huawei ONTs

: Use a standard Ethernet cable to connect your PC's LAN port directly to one of the ONT's LAN ports (usually LAN1).