Gargoyle Forum

HI,

I am not sure what I did during 1.4.5 flashing, now the POWER, SYS and QSS is solid green and failsafe-mode no more.

I had a nokia cable connect to router while booting and it stop after a few lines:

U-Boot 1.1.4 (Sep 3 2010 - 12:28:13)

AP91 (ar7240) U-boot
DRAM:
sri
#### TAP VALUE 1 = a, 2 = b
4 MB

My only option is to use a serial cable with spipgm.exe to reprogram the flashrom solder direct to flashrom.

My friend who has the same version router (flashed with ddwrt), can I still get files from his router to unbrick my router?

Can anyone please tell me the command line require to copy files to my pc?

Other than uboot, what other files will I need to copy for future reference?

Other suggested a backup command, but bin and backup extension isn't the same, right?

I hope you guy can give me some detail instruction with step by step of what to do as I have no technical background.

Thank you very much.
Tammi

http://wiki.openwrt.org/toh/tp-link/tl-wr741nd

Follow the serial recovery steps on that page

If you cannot recover via that, there may be other damage.

I guess I didnt make this clear.

As of today, I have a diy program serial lpt cable ( http://rayer.g6.cz/elektro/spipgm.htm ) and spipgm.exe showed a winbond flash and allow me to write file. All I need now is how to copy uboot and other files from my friend's router, then edit them and transfer it to my router.

Sorry for the misunderstanding

There is no way you could've corrupted uboot just from flashing

I've flashed many different types of routers and the only way I've
ever managed to corrupt a uboot was when I actually tried to flash
a different uboot version via serial

If you can't flash a firmware via serial console in uboot, you have more
damage happening and you copying your friends files over won't help

Can you see all the uboot commands?

As mentioned above, via nokia cable (I even cut short to make sure it isn't too long) connected to router, I get

U-Boot 1.1.4 (Sep 3 2010 - 12:28:13)

AP91 (ar7240) U-boot
DRAM:
sri
#### TAP VALUE 1 = a, 2 = b
4 MB

Nothing below 4MB and I cannot type anything as there is no prompt below that. I know others have 32mb after SRI and my above don't. Others also have id read 0x100000ff flash size 4MB, sector count = 64 Flash: 4 MB and much more information below that. but mine above just had far few line than a normal uboot.

I am not sure what I've done, but one thing I forgot to say, there was a thunder storm that night and power surge flicker the monitor screen a lot and perhaps it may disrupt the flashing. The firmware seems to be flashing, and I remembered something saying writing firmware ......... but didn't doing anything or reboot after 30 mins, so I unplug and that is what happened. I don't think the chip was fried because spipgm can id the chip brand and size. Because of it, I thought it would be easier to reprogram the flash chip.

Anyway, It doesn't have to work but just a small project to try and learn something out of it. If all failed, a new 8mb flash ic cost 3 bucks and it will be a good upgrade, but I still need to know which files to copy and how to partition the new flash ic.

Therefore, every possibility and command learn here would be great benefit for future.

Thank you very much.

OK - that makes more sense.

Yeah the lightning strike definitely screwed up your flash chip.

I don't know if you can just copy a file over, you may have to use
some type of programmer to copy the whole chip.

The only issue is that for Atheros devices, part of the flash chip
stores radio info usually specific to each router that is configured
when they QA the device

So cloning the chip could work, but your wireless may have a chance
to not work the greatest.

I don't think I will buy a progammer or even desolder chip from my friend's router.

I thought there is a dd command that people use to backup the whole flash if one can ssh into router, right?

Can anyone please teach me how to type the dd command so I can clone my friend's router in one bin file?

Thank you very much.

tammic wrote:I don't think I will buy a progammer or even desolder chip from my friend's router.

I thought there is a dd command that people use to backup the whole flash if one can ssh into router, right?

Can anyone please teach me how to type the dd command so I can clone my friend's router in one bin file?

Thank you very much.

Are you looking for this?
https://dev.wlan-si.net/wiki/Routers/TP ... lashMemory