You say that the cable needs to be powered from the router side too, so i assume i have to connect the PIN4 (square) pin of the router to the serial cable converter, but which pin should i connect it to? Assuming blue and white are the RX/TX pair, and i know that the black is the GND, i have to connect either green or orange to the router's 3,3V?
Well, I say that at least one cable that I have needed to be powered from the router since it didn't get power to its serial section from the USB port.
Since you don't get any echo back when directly connecting the 2 wires together that most likely are tx and rx then I believe that you may also have one of those cables that needs to be powered externally.
You don't want to guess which of the cables it is. you should now check with an ohm meter in the phone connector that you cut off.
And yes, it should be connected to the square pad in the router.
I made console pins of paperclips (they make good contact and are easy to solder). I just did it in the end with 50-50
I had to connect the square pin to the orange pin (which is based on the DKU connector pinout is the insertion/removal detect pin. I will post the bootsequence in a couple mins after getting my cable properly soldered.
Router console shows now, but some characters are sometimes garbage:
U-Boot 1.1.3 (Jul $1 2010 - 14:36:48)
Board: Ralink APSoC DRAM: 32 MB
relocate_code Pointer at: 81fac000
======= config usb otg =====
flash_protect ON: from 0xBF000000 to 0xBF020593
protect on 0
rrotect on 1
protect on 2
protect on 3
protect on 4
protect on 5
protect on 6
protect on 7
protect on 8
protect on 9
flash_protect ON: from 0xBF030000 to 0xBF03FFFFprotect on 10
*** Warning - bad CRC, using default environment
Please choose the operation:
1: Load system code to SDRAM via TFTP.
2: Load system code then write to Flash via TFTP.
3: Boot system code via Flash (default).
4: Entr boot command line interface.
9: Load Boot Loader code then write to Flash via TFTP.
You choosed 3
0
3: System Boot system code via Flash.
## Booting image at bf050000 ...
Image Name: Linux Kernel Image
Created: 2010-07-08 14:52:04 UTC
System Control Status = 0x00440000
Image Type: MIPS Linux Kernel Image (lzma compressed)
Data Size: 3321792 Bytes = 3.2 MB
Ìoad"Address: 80000000
Entry Point: 802d4000
Verifying Checksum ... OK
Uncompressing Kernel Image ... OK
No initrd
## Transferring control to Linux (at address 802d4000) ...
## Giving linux memsize in MB, 32
It seems i successfully made a brick... i accidentally loaded the flashfile via TFTP into the bootloader code...
(router ip is 10.10.10.123 and tftp ip is 10.10.10.3 in variables, default image was test.bin)
I know i am an idiot... but still:
I suppose the only way to unbrick it is to unsolder the flash chip and reprogram it, or is there a way to reflash the chip without unsoldering like on the WRT54GL with a JTAG cable?
I suppose the only way to unbrick it is to unsolder the flash chip and reprogram it, or is there a way to reflash the chip without unsoldering like on the WRT54GL with a JTAG cable?
Taking out the chip and programming it in an external programmer is currently the only solution.
Tjtag does'nt have support for Ralink router and most of them does not have a jtag port connected or accessible anyway. _________________ Kernel panic: Aiee, killing interrupt handler!
Taking out the chip and programming it in an external programmer is currently the only solution.
Tjtag does'nt have support for Ralink router and most of them does not have a jtag port connected or accessible anyway.
You answered a question I was going to post on my bricked ESR-9850 since uBoot is gone. The ESR-9850 has 8 pins that appear to be possibly JTAG but not sure.
I suppose the only way to unbrick it is to unsolder the flash chip and reprogram it, or is there a way to reflash the chip without unsoldering like on the WRT54GL with a JTAG cable?
Taking out the chip and programming it in an external programmer is currently the only solution.
Tjtag does'nt have support for Ralink router and most of them does not have a jtag port connected or accessible anyway.
The only problem now, that i need to create an "image" that contains both the bootloader and the firmware itself because the chip programmer writes the "whole" chip area, or i need to know the chip adresses whereto write what part of the files.
Is it okay if i just do a binary copy like this to create an image to write to flash:
like: copy /b uboot.bin + rtn13u_asus_to_ddwrt.bin wholeflashimage.bin
It may not be worth to do it, but i am willing to revive my router, i have a friend who has a programmer for flashchips and can solder/desolder the chip too.
....or if i simply write the uboot.bin code to the beginning on the chip i can flash anything again by console...
I dont know how to debrick via JTAG, but this is bootloader from my router if you need.
Thank you, it will come in handy when i try to revive my router next week when removing and programming the chip directly. I can just hope it is compatible with my router model too...
- edit: Looked at the file i see it is same version U-Boot 1.1.3, fingers crossed
My project is over... the costs to get the chip out, program it, and solder it back would be almost the price of the router itself. I have a white brick with two antennas now
I wanted to post a follow-up question on this - I have the same exact router as peanut_hu and managed to solder some pins onto the board as well as use a TTL cable to gain console access via the jtag. So basically up to the point where peanut_hu had the flash issue.
I wanted to ask radmir & Radem about their flashing process from this point forward - I was planning on the RT-N13U rev A flashing process, but I assume that I can skip the asus-to-ddwrt.trx step and go straight to the bin? And I would load this into the system code, not the Boot loader as peanut_hu did - sorry, very novice at all this!
I bought the same white Bococom router. So, how can I reflash him to dd-wrt? Could someone provide step by step procedure with dku-5 serial cable? Or maybe someone know how load dd-wrt without soldering.
I bought the same white Bococom router. So, how can I reflash him to dd-wrt? Could someone provide step by step procedure with dku-5 serial cable? Or maybe someone know how load dd-wrt without soldering.
Please choose the operation:
1: Load system code to SDRAM via TFTP.
2: Load system code then write to Flash via TFTP.
3: Boot system code via Flash (default).
4: Entr boot command line interface.
9: Load Boot Loader code then write to Flash via TFTP.
You choosed 3
Cannot select anything else. How can I choose 4? Router ignores my input.
