i bought a bt adsl router (btvoyager 2500v) a while back then found the thing was locked to bt,so couldnt be used on any other isp,anyways after a while of waiting and checking various websites ive finally found the firmware upgrade that seems to unlock it to other isp,s.been using it for a day now without any probs.
h**p://www.voyager.bt.com/firmware_upgrades/cfe-voyager2500v_sip_bbv-v301q_a2pb018c1#0#
h**p://www.voyager.bt.com/firmware_upgrades/cfe-voyager2500v_sip_bbv-v301q_a2pb018c1#0#