Most fiber ISPs (like PLDT, Globe, or local municipal providers) can push a configuration update to your modem remotely to enable Bridge Mode.
| Problem | Likely Fix | |--------|-------------| | Cannot delete or edit the existing Internet WAN profile | ISP has locked the firmware. Contact them to enable bridge mode, or ask for a “modem-only” mode. | | No internet after bridge mode | Double-check VLAN ID, PPPoE credentials on your router, and that your router’s WAN port is plugged into the correct LAN port on the ZTE F689. | | Still getting 192.168.x.x IP on router | Bridge mode not active; your router is behind NAT (double NAT). Re-check steps 3 & 4. | | Can’t access ZTE F689 after bridging | Normal – your router’s subnet now handles LAN. To re-access, temporarily set your PC’s IP to 192.168.1.100, subnet 255.255.255.0, then browse to 192.168.1.1. | Zte F689 Bridge Mode
If you found this guide helpful, share it with a friend suffering from lag spikes or broken port forwarding. Bridge mode is the answer. Most fiber ISPs (like PLDT, Globe, or local