[Cerowrt-devel] WNDR3800CH varient doesn't load WNDR3800 firmware (fixed)

Sam Chessman sam.chessman at gmail.com
Fri Aug 1 23:29:04 EDT 2014

I am also happy to report success with the squashfs wndr3800ch img
from http://snapon.lab.bufferbloat.net/~cero2/test-wndr3800ch/openwrt-ar71xx-generic-wndr3800ch-squashfs-factory.img
This feels ready, time to push upstream and get openwrt to pull the
change.  It's working.

I also used tftp factory reset, and am enjoying the extensive luci interface.
I enabled SQM which is my main reason for loading Cerowrt.  I'll be
setting this up for some throughput tests in the coming weeks and
wanted to add my thanks as well.


On 8/1/14, Dave Taht <dave.taht at gmail.com> wrote:
> I just put test images up for the wndr3800CH up at:
> http://snapon.lab.bufferbloat.net/~cero2/test-wndr3800ch for squashfs and
> jffs2.
> It is otherwise the same as the 3.10.50-1 release. If it works for you two
> I'll fold the 2 line patch into the build or pester someone at openwrt to
> get it in there.
> On Sat, Jul 26, 2014 at 10:44 AM, Sam Chessman <sam.chessman at gmail.com>
> wrote:
>> Top reply?  Well, anyway I bought a refurbished WNDR3800 from amazon
>> $40.00 to run cerowrt.  I was hoping to get a compatible model but it
>> turns out I got a version with model change to WNDR3800-1CHNAS which
>> cause the firmware upload to fail gracefully.    I found out about
>> this at openwrt.org, see
>> https://forum.openwrt.org/viewtopic.php?id=49390
>> The above referenced thread refers to an openwrt developer (zloop) who
>> says he built a version with a different model string WNDR3800CH.
>> See https://forum.openwrt.org/viewtopic.php?id=51025
>> "according to GPL fw sources the router is called "WNDR3800CH"
>> so adding a line
>> Makefile:$(eval $(call
>> SingleProfile,Netgear,64kraw,WNDR3800CH,wndr3800ch,WNDR3700,ttyS0,115200,$$(wndr3700v2_mtdlayout),0x33373031,WNDR3800CH,"",-H
>> 29763654+16+128))
>> and modify the WNDR3800CH model to the Multiprofile line
>> $(eval $(call MultiProfile,WNDR3700,WNDR3700V1 WNDR3700V2 WNDR3800
>> should create an image that can be flashed from factory firmware
>> PS: it's all untested - no guarantee it will work
>> feel free to test and send to the mailing list
>> "
>> I'm going to try patching the image header to have the model name
>> "WNDR3800CH" and see if it will load.
>> It would be a good idea for the developers who understand the above to
>> add this model to the makefiles so it also gets built.  I bet a lot of
>> WNDR3800-1CHNAS series routers are out in the wild and if someone
>> picks one up to run wrt or cerowrt they will be stymied.
>> Sam
>> > Hi Eric,
>> >
>> > I can answer the first question: yes, that's the one. I'm running on
>> > exactly this since more than a year now.
>> >
>> > Best regards,
>> > Maciej
>> >
>> > On Tue, Jul 15, 2014 at 7:37 PM, Eric S. Johansson <esj at eggo.org>
>> wrote:
>> >> is this the right box for cerowrt?  I figure a refurb should work as
>> well as
>> >> new for this project.
>> >>
>> http://www.newegg.com/Product/Product.aspx?Item=N82E16833122523&cm_re=WNDR3800-_-33-122-523-_-Product
>> >>
>> >> btw, as a funding mechanism, have you considered teaming up with
>> Netgear to
>> >> sell refurbished boxes loaded up with cerowrt?  set up inexpensive for
>> fee
>> >> support forum you have two revenue streams.
> We had had several discussions with netgear's CTO about various options for
> a relationship. Towards the end, it seemed like my communications were
> being sent directly to /dev/null.
> Doesn't mean that they can't resume talks, but I'd rather get a RFP
> together for the next generation and see who might care enough about it to
> want to participate.

<footers deleted>

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