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Second, verify file integrity. Check the firmware’s MD5 or SHA256 hash if provided, ensuring the file is not corrupted during download. Corrupted firmware can cause incomplete flashing, leading to boot loops or non-functional interfaces. Third, back up the current configuration. Under , export the settings (e.g., backup.cfg ). This backup is invaluable if the upgrade resets parameters such as VLAN IDs, PPPoE credentials, or VoIP SIP settings.

on your PC (antivirus, VPN, torrents).

Upgrading the "brain" of your ONT can solve several common issues: hg8245q firmware upgrade high quality