someone can change firmware VLAN code?

[bayern1975]

hello, i need to have different VLAN ID for internet and IPTV....if i use settings from webui then they have same VLAN ID and that is problem for my nonstop disconnectivity....is here someone who can look inside firmware`s VLAN code and compiled just for my case? here is how looks now....

so, WAN for internet and LAN4 for IPTV(udpxy) have a same VLAN (2)....but i think i need VLAN (1) on LAN4 port....