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Hardware Hacking The hammer and tongs school of Overclocking. (NOT for the beginner and you assume all risks)


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  #1 (permalink)  
Old 13th December, 2011, 06:01 PM
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JTAG and Thomson routers

Has anyone had the joy of attempting to utilise the JTAG connection on a locked Thomson router (like BT Home Hub 2.0A or the O2 wireless box IV)?

Normally people seem to use a parallel port on a host to act as the JTAG interface, but I no longer have any machines with a parallel port! So, at some point in the near future I intend to attempt to use a Bus Blaster (USB JTAG interface) to remove the ISP lock from either or both of the aforementioned routers, so I was wondering if anyone else had attempted this!
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Old 25th December, 2011, 11:15 PM
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Bump, we're all ears!
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Old 27th December, 2011, 09:43 AM
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I was going to post before Christmas, but didn't get around to it. So far I have discovered that one of the software tools supposedly supports one of the devices that the Bus Blaster emulates. However, when I try, the tool just complains the firmware is out of date. There's also some fun with two different drivers for the same bit of hardware, and needing to have both to get the Bus Blaster configured and running.

So, plan B is to use my Bus Pirate with brJTAG. brJTAG doesn't natively support the Bus Pirate, but I do have the source for an older version of it. My intent is to hack basic Bus Pirate source into it initially, and then to upgrade the support to something less basic and somewhat faster.
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Old 16th February, 2012, 04:36 PM
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I'm not doing quite so well here - I've managed to kill the output buffer on my Bus Pirate. So, until I get a chance to fix it, I'm a little stationary in the water. I did wonder about trying to use urJtag - has anyone else used it?
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Old 12th March, 2012, 10:37 PM
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Sorry that this Thomson router is being uncooperative. I have a feeling that it was expensive.
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Old 21st March, 2012, 02:43 PM
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Actually, it was free from an ISP!

The Thomson routers are really just linux boxes, but with a Thomson interface on it. ISPs like them as they're pretty flexible and the ISP can lock them down so you can only use them with the ISP who provided them.
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Old 6th September, 2012, 05:07 PM
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So what will this do? Will it give you better connection speeds or vary the connection provider using a different router?
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Old 6th September, 2012, 08:52 PM
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The idea was to unlock the router so it could be used with a different provider.
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Old 6th September, 2012, 11:00 PM
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Like unlocking a mobile to be used with any simcard
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jtag , speedtouch , thomson , unlocking



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