I'd be very surprised if there be any fix for this router, as it's been two years since the last firmware, and the forum isn't monitored, which is evident by the spammer above me.

I don't use WiFi on mine at all. Once it locks up, I cannot even get into the web interface. The only way to fix it is to reboot. I couldn't use it with this instability, so I have gone to a Netgear...

Same issue here, same firmware version. I had multiple issues with my R600 due to firmware bugs, so I upgraded to the 604W, which works perfectly, except that it seems to lock up after heavy network...

I upgraded to an ER604W, which also works fine with NAT Loopback, but unfortunately I had to setup a repeater as it didn't recognise the 15m cat5 cable for some reason, which all other's had no...

Model : TL-ER604W Hardware Version : V1 Firmware Version : ISP : The ER604W is a good little router, with a few minor issues, but one major issue is that it's limited to 15 entries under Virtual...

Further testing. I tested WNDR4500, WNDR3800, TL-W350G, all working fine with loopback both TCP/UDP ports. Testing with R600VPN has confirmed that TCP NAT loopback is functioning as expected,...