not 100% sure what you mean, maybe your talking about a firmware update for a router?...either way if it helps i have tried 3 of bts modem/routers

green frog
bt home hub

same problem on all 3, also tried my DLINK dsl504T same problem on that, its definatly something on the network, as i can take my router, and my comp to my gfs, plug it into hers and it works instantly without changing any settings.