Just wondering if anyone came across the same problem as i did...
Somehow the router got bricked, i.e. after power-on the power LED just blinks about 3blinks/sec (after some time steady on). No answer to ping to 192.168.1.1, tcpdump doesnt show any packets sent by the router.
However, the router can be put into TFTP flashing mode, trx file can be sent, but after the reboot, the same behavior produced.
As for serial console, all i could see is just garbled nonsense, no matter what setting is used.
Failsafe mode can be engaged (LED is blinking rapidly), but again, no SSH nor anything is possible.
So i'm kinda stuck!
Any hints or advise please?
I have a PL2303 usb to serial.
Tried different speeds, it's either nothing coming or the same, but according to other posts it should be 115200/8/n/1.
Also tried different data/stop bit combinations... same result.
As for the wiring, it's only 3x wires, so not many combinations, and only one gives some kind of output.
DB9 pin 3 = RX , pin 2 =TX , pin 5 = GND.
Please correct me if i'm wrong.
I think your problem is the PL2303
A quick google search says it is RS232 serial.
Is that the case, if it RS232 then the signal voltage is not compatible and you may have damaged your router.
Most routers use a 3.3V UART signal.
If your serial adaptor has a DB9 connector then I sure you are using RS232 and that is most likely the problem.