[Battlemesh] [FCC] What hardware still works?

Ben West ben at gowasabi.net
Tue Feb 23 18:04:31 CET 2016

Is JTAG intervention now required?  I had thought I'd read that serial
console access and/or TFTP recovery mode was sufficient, at least on
TP-Link products being discussed.  Since we're talking about products
costing only 50-100USD, I would gather that the amount of effort
manufacturers are willing to invest in locking the firmware is finite,
meaning by extension the effort required to work-around such locks should
also be finite.

That is, all radio products with firmware presently for sale can have their
firmware modified, given sufficient effort.  The fact that sufficiently
determined persons can override countermeasures and mod the firmware
doesn't appear to endanger their FCC certification.

Anyway, similar to the hardware compatibility pages on openwrt.org's wiki,
would it make sense to also record in wiki the list of working hardware,
along with known work-arounds?

What would be a good venue for such wiki pages?  Any of these?


On Tue, Feb 23, 2016 at 10:23 AM, Philipp Borgers <borgers at mi.fu-berlin.de>

> On Tue, Feb 23, 2016 at 05:08:52PM +0100, Benjamin Henrion wrote:
> > On Tue, Feb 23, 2016 at 4:26 PM, Adam Longwill
> > <adam.longwill at metamesh.org> wrote:
> > > We have contracts to fulfill. Can we start a discussion here about what
> > > hardware still works? What about Ligowave who came to Battlemesh v8?
> They
> > > said they gave out unlock codes. Do any of you use them? What hardware
> are
> > > you STILL buying that STILL works?
> > >
> > > Also, is it possible to use the JTAG interface to reflash a router and
> erase
> > > locked down firmware or is it the same as ethernet flashing- I've
> never done
> > > it.
> >
> > Yes, depends on the SoC, and if the JTAG pins are properly exposed.
> >
> > After that, the JTAG software needs to support your flash chip.
> >
> > Otherwise, since nowadays most flash chips are SPI ones in SOIC8
> > format, it is easier to just use a buspirate with a 4x2 clamp hooked
> > on the chip, and you will be able to reflash it:
> >
> >
> http://www.dhresource.com/0x0s/f2-albu-g1-M00-CA-EB-rBVaGFQ_GG6AHCR0AAEtkRTBPOQ099.jpg/updated-ic-clamp-soic8-sop8-ic-clip-1-adapter.jpg
> Can someone give a workshop about the tools for flash reading and the
> process
> involved?
> Maybe we can collect some money in advance so everybody can have the right
> tools
> at hand?
> Best Philipp
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> Battlemesh at ml.ninux.org
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Ben West
ben at gowasabi.net
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