David,
No, sorry to say, but you can't upgrade via firmware. New docsis 3.0
uses something of a MIMO-kind of muxing of multiple upstream/downstream
channels, much the way 802.11n does, or some of the bastard hack
variants of 802.11g do for "speed boost" resulting in increased
bandwidth. This requires more granular/precise clocking, faster
processing, whole new chipsets, and a gigabit ethernet port (150mb/s
theoretical max downstream) to achieve this. The only modem I know of
on the market currently is the Motorola Surfboard 6120, which frys sells
for around 90 bucks.
If I'm not mistaken, I think 2.0 is good to around 12-15mb/s tiers
because it does some channel-bonding itself, just not to the level to
get the 25mb/s down cox is starting to roll out, or the 50mb/s
charter/comcast are on the east cost.
-mb
On Tue, 2009-07-28 at 17:19 -0700, David Munson wrote:
> Anyone know if existing 2.0 compliant cable modems can be updated to
> support 3.0 (presumably via firmware), or will I have to get a new
> cable modem once 3.0 is rolled out in my area?
>
> I have a Linksys BEFCMU10 cable modem and it's served me well for the
> past 5 years, but I haven't seen anything from Linksys (geared for
> home use, anyway) that's DOCSIS 3.0 compliant.
>
> On Tue, Jul 28, 2009 at 2:03 PM, Michael Butash <michael@butash.net>
> wrote:
> Most any will work, just avoid the really cheap/off-brand ones
> (best-data frys specials are known by cox to have issues with
> latest
> infrastructure code, now unsupported). I'd recommend making
> sure it's
> at least docsis 2.0 capable, and if you want the really high
> tiers of
> service (15mb+) get a motorola 6120, as they support docsis
> 3.0 which is
> rolling out now.
>
> -mb
>
>
>
> On Tue, 2009-07-28 at 12:54 -0700, Jason Holtzapple wrote:
> > mike havens wrote:
> > > that was probably a stupid quesxtion; is a cable modem a
> cable modem...
> > > meaning any of them will work on any system?
> >
> > If cox is the provider, they have a supported list:
> >
> > http://support.cox.com/sdccommon/asp/contentredirect.asp
> >
> > I have and use a Motorola SB5101 and have no issues.
> >
> > --Jason
> >
>
>
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