Hi, our 2860N has lost its mind...The router had the act, usb and 24ghz lights flashing. OK I thought thats odd, checked and its in tftp mode. So we using router tools, sent a .all firmware. this should have kept the settings but it lost them. Powered the router down and its back to tftp mode. If the router is rebooted no issues unless it loses power completely then it drops back to the three lights flashing and so on.

We have tried a .rst firmware as well with no joy. Its like it cant save a configuration and therefore boots with no config until the tftp put a new firmware which must be running in ram.

Any ideas?

That could be a faulty power supply possibly?

Also, try flashing the non-vector firmware to the unit to see if it makes a difference?