Hello,
1. F602 V6.0.2P2T2 is only used for China, how do you get the ONU?
2. If you want to ping through from LAN port to WIFI port that you need configure vlan for LAN port and WIFI port via omci on OLT.
vlan port eth_0/1 mode tag vlan xxx //xxx need modify for vlan id.
vlan port eth_0/2 mode tag vlan xxx
vlan port eth_0/3 mode tag vlan xxx
vlan port eth_0/4 mode tag vlan xxx
vlan port wifi_0/1 mode tag vlan xxx