Huawei Hg8145v5 Firmware Update Site

The new firmware cleared your ISP-specific provisioning data (VLAN profiles or PPPoE connection strings).

Never flash firmware over Wi-Fi. An unexpected drop in wireless signal during the write phase will corrupt the flash memory. Connect your computer directly to LAN Port 1 or LAN Port 2 using an Ethernet cable. Huawei Hg8145v5 Firmware Update

The firmware update wiped your ISP configuration profiles (VLAN IDs, PPPoE credentials). The new firmware cleared your ISP-specific provisioning data