[OpenWrt-Users] AR7 status (wrt DG834Gv3 particularly, WAG354G too)

[Marco Simioni]

I reflashed it via a JTAG interface, connected to a parallel port, and
applied to the jtag pins on the DG834Gv3. Somewere on the net you can
find where the connector is on the board. You have to open it, of
course ;)

I used the Wiggler  interface http://ciclamab.altervista.org/hard.php?lan=en
Than i used the debrick-mod.exe utility inside the CICLaMaB package
http://ciclamab.altervista.org/index_en.php
It recognized my hardware as:
- CPU: TI AR7WRD TNETD7300GDU Rev 1 CPU
- FLASH: MX29LV320B 2Mx16 BotB (4MB)

And i was able to restore the original flash content using this utility.

For forther references, see my posts on the routertech forum
http://www.routertech.org/viewtopic.php?t=1024&postdays=0&postorder=asc&start=0.

A smart guy on that forum, thechief, helped me recovering this device!


2007/8/27, Paul Jakma <paul at jakma.org>:
> On Wed, 22 Aug 2007, Marco Simioni wrote:
>
> > I think so. I had to build up a jtag interface and reflash with the
> > original flash content. If you open it, and connect an rs232
> > interface (see various instructions on openwrt wiki), you can see
> > that the bootloader boots up, but there is no way to break it: in
> > the original adam2, i remember that you can break its execution
> > pressing a key via rs232. In this modified version, you can't, so
> > you can't use the "command line" commands, and you can't use the
> > tftp (it's disabled).
>
> Hmm, I'm curious, but if the firmware doesn't respond to breaks and
> you can't get console, how do you reflash it??
>
> Netgear have a utility to recover 'corrupted' DG834G. Comes linked to
> some BPF raw-packet DLL. So I'm guessing the DG834Gv3 can still be
> flashed via some magic ethernet frames.
>
> (sadly, I can't get the thing to run and produce frames in either
> Wine or the WinXP live cd I have)
>
> regards,
> --
> Paul Jakma      paul at clubi.ie   paul at jakma.org  Key ID: 64A2FF6A
> Fortune:
> Real Programmers don't eat quiche.  They eat Twinkies and Szechwan food.
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