[Battlemesh] [FCC] What hardware still works?

[Adam Longwill]

I do not have a good understanding of the difference between jtag/serial/
and tftp. Can someone briefly explain the difference for people like
myself? Can JTAG flashing replace a locked firmware? I thought the chips
themselves could be built to only cryptographically accept approved
firmware? Or is that only with "higher level" flashing methods.

Anyone have a Explain it Like I'm 5 version out there to help explain?

Thank you all.
On Feb 23, 2016 12:04 PM, "Ben West" <ben at gowasabi.net> wrote:

> 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?
>
> https://wiki.openwrt.org/
> http://battlemesh.org/
> https://wirelesspt.net/wiki/P%C3%A1gina_principal
> https://libreplanet.org/wiki/Main_Page
>
> On Tue, Feb 23, 2016 at 10:23 AM, Philipp Borgers <borgers at mi.fu-berlin.de
> > wrote:
>
>> 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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>>
>>
>
>
> --
> Ben West
> http://gowasabi.net
> ben at gowasabi.net
> 314-246-9434
>
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>
>
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