I am trying to setup my old beetel 450TC1 as wireless repeater for that i need to do firmware upgrade so that the WDS option will come in that. But the modem's firmware is refusing updates.
The specs are
Modem :- beetel 450TC1
RAS version: V85.2.04.02__TWD-ZZ-002
Any ideas ? I have already tried TM4-0Q-008,16,20 and 25 none of them are being accepted.