Hola, seguí un tutorial para recuperar un router, mediante este procedimiento por usb ttl y cable de red conectado
My problem fix Solved.
1).open board and soldering TP18 to TP38 and TP28 to TP48 should be connected.
2).Connect usb to TTL GND,Tx and Rx pins. (Tx from schematic goes to Tx pin of router, Rx from schematic to Rx of router
3).set IP pc 192.168.1.100
4).Install tftpgui anda copas firmware to tftproot rename to code.bin
5).run tftpgui (don't any set up)start only
6) set usb to TTL:
Bits per second: 115200
Data bits: 8
Parity: none
Stop bits: 1
Flow control: none
7). Open PuTTY via serial see set no.6 COMx x see device manager.

.Once you click "Open", then you should see the router's console.While the router is connected to your computer using the usb-serial cable we just created, then power the device off, then on again, while device boots, (within 1-2 seconds) you need to be on the putty window typing the word "tpl". YOU MUST BE VERY FAST!! If you successfully log in
9). Write comand:
Hornet> erase 0x9f020000 +0x3c0000
Hornet> tftpboot 0x81000000 code.bin
Hornet> cp.b 0x81000000 0x9f020000 0x3c0000
Hornet> bootm 0x9f020000
10).wait ROUTER reboot and 3 led indikator on debrick Solved
Me sale esto al hacer el proceso:

