Region : Argentina

Model : TD-W8968

Hardware Version : V3

Firmware Version :

ISP :

Hi there... I've recently replaced my ISP provided ADSL+ modem by a TD-W8901N (FW 1.0.0 Build 121121 Rel.08870) and the windows share system is not working with this one, but when I put back the old wireless ISP modem, it works.
When I try to update the firmware I always get this incomplete error message:
"ERROR: FAIL TO UPDATE DUE TO... ERROR: FAIL TO UPDATE DUE TO..."
...And I cannot do anything.

Any suggestions? Thanks!