PPPoE connection problem with MN-700

Archived from groups: microsoft.public.broadbandnet.hardware (More info?)

After my ISP switching the server to his service
provider, I found that I can never access to internet by
PPPoE connection through router mode of MN-700 again, but
only AP (access point) mode works (dial PPPoE on
notebook).

details of my system:
XP + sp2;
firmware of MN-700: 2.1.2.590
PPPoE username mode: 11111111@abcd

If any body met this kind of problems before, and if
there is any solution?

I doubt that the dialer program of PPPoE of MN-700
conflicts with the new server, and would like to try to
reflash the former version firmware to MN-700, but can
not find it. If anybody can find it so that I could have
a try?

Many thanks for all.

Best Regards,
Liang Weihong