Problem with router since a short time PLEASE help

[Mario27]

normally my Linksys WRT54g router was fine but it didnt finded to mutch servers but a few since to day when i have the router on it blocks me from ea server or it finds like 100 200 servers when i play without router i have 5000 servers in cod or fine with wow with router on in world of warcraft it says evrytime Launcher cannot obtain patching information, Please Check your internet configuration

my downloads is with router 5800 kbs without router 8500kbs how can i get the same speed with router and get all game servers so it doesend block that because im here with more people on the internet in house but for now i disabled the router could anyone help me to get that fixed to get the same speed and that ea allows me true the router? bbecause with Router on it says failed to connect to ea servers now its working fine without but i need a router for the other people here in house but i just cant connect to mutch servers then what to do?
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[Tony]

try a hard reset and check for a firmware upgrade as well

 

[Mario27]

try a hard reset and check for a firmware upgrade as well

i did a hard reset but evrytime i upgrade a firmware it says firmware failed i wil buy a new router or els the others here in house have to order a second internet because i dont wanna have this issue because of a stupid router that blocks servers from cod etc