Site to site vpn fail to connect with 310 and 210

Hi there,

I have purchased a new 210 with firmware 5.4.4 and 310 with firwire 4.8.3

Just failed to connect the site-2-site VPN.
I have followed the guide, opened the ports, mapped with the serial no but still fail.

It just shows connecting in the WebUI.

May I know it is possible to fix this ?

Thanks !

Due to the firmware different is too huge, we would suggest you to upgrade the 310 to version 5.4.4 and try again. It should work with same firmware version.