I tried tftp-ing many times and also tried renaming the firmware to o.img - it didn't help at all.
It's worth noticing though that I tried jffs2 firmware initially (as per the original instructions).
When it didn't work, I downloaded OpenWRT beta for WND3800, which happen to be a squashfs image, so decided to stick to squashfs, uploaded squashfs CeroWRT image and it worked.
I've never tried tftp-ing squashfs image, maybe it will work straight away? It requires more experimenting to figure out what was the problem.


Max

On 3 November 2011 11:14, Jim Reisert AD1C <jjreisert@alum.mit.edu> wrote:
On Wed, Nov 2, 2011 at 3:39 PM, Maxim Kharlamov wrote:

> 2. flashed OpenWRT using netgear web gui (it shows a warning but allows to continue)

This is interesting:

   http://wiki.openwrt.org/toh/netgear/wndr3700

"OEM installation using the TFTP method

"However, note that the router will not accept the firmware when the
filename is too long! Using firmware.img as filename should work."

I wonder if this is the problem.  I'll try this first, then try the
OpenWRT-as-intermediate-step method if this doesn't work.

- Jim

--
Jim Reisert AD1C, <jjreisert@alum.mit.edu>, http://www.ad1c.us



--
Thanks,
Max