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Unfortunately what you're proposing is not possible in 2014. If this were a few years ago then it would've been a matter of flashing to a diagnostic firmware and forcing the modem to download an alternate tftp boot config with better speed settings.
Your modem is provisioned to run at the speed you are getting. There is no conventional way to get around it.
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Man, I wish I had a time machine. I currently have another Motorola SB6141 that is capped at 50MB. I set it up with Comcast about 1 year ago then I cancel my subscription. I disconnected my modem for about a month. Every time I connect this modem I pretty much have free internet. Is there any chance that Comcast will shut down this modem since it is pretty much free service?
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Yeah there is always a chance that they'll shut down the modem. We can't really estimate how long your modem will continue to be provisioned before it's caught in an audit, I guess it's just one of those things where you'll run it and learn about it.
If you have two modems, you can actually do a dualwan type setup thing so that would yield a total of 100 mbit of speed. It's a little complicated to set up depending on your skill set and effort you want to put in.
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Buy any puma5 capable modem such as the sb6120/sb6120 and flash the flash forceware yourself. That modem as is will not enable you to uncap your modem, you still need to understand how this docsis stuff works and how your local network is set up in order to test and achieve newer and better speeds.
Also, guys like magicmodem and modempremod are selling the firmware without mforce's permission and expect everyone here and on sbh to do the tech support for them for free.
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good advice indeed, and definitely good to know.
i have a sb6120 already (stock), and i'm fairly knowledge about my lan, so if you have a good tutorial or info that might help me achieve what i'm looking to do that would be great. i was going to buy a jtag like the original poster mentioned, but it seems as though that's not the way to do things anymore? i'm a bit confused in that realm i guess. tyvm
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The 2 common jtag's that people in the modem testing scene use are the USB JTAG NT and the BLACKCAT USB. Either one of them will enable you to write forceware or any other firmware to your SPI flash based puma5 modem.
Alternatively, if you have a usb ttl and serial points on your modems board, you could upgrade to forceware using the bootloader. Haxorware.com is still relatively new in regards to the talking of D3 modems so you might want to check out SBH which has several guides to help you accomplish what you want. It's written clearly so you won't have any issues with it (hopefully).
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09-01-2014, 02:34 PM
(This post was last modified: 09-01-2014, 02:46 PM by neo_.)
I personally prefer the USBJTAG NT due to it's friendly software interface, large community support, and faster hardware.
If you are on a budget, the Blackcat is much cheaper.
Be sure to look into a SPI clip if you aren't comfortable soldering and/or the convenience factor.
