This is JTAG to debrick any JTAG device. Modem, cable boxes, dish boxes routers.
bftiedt
Junior Member
Posts: 53 Joined: Sun Oct 25, 2009 6:23 pm
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by bftiedt » Sun Dec 19, 2010 11:04 am
i have tried all the steps i knw i can detect but it gives me all 0' for the value. So i tried the j200 jumper method with tap c and tap, even used the tap a ffffffff, and debug still wont come on. about the only think i have dont is shocked the hell out of myself 2 times now lol. im at a loss of what to try so any suggestions would be great.
usbbdm
Junior Member
Posts: 8962 Joined: Mon Jul 18, 2005 9:33 pm
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by usbbdm » Sun Dec 19, 2010 11:07 am
DEBUG has to come on and if not you need to think
1. Do do the J200 properly?
2. Is the CPU completely dead?
bftiedt
Junior Member
Posts: 53 Joined: Sun Oct 25, 2009 6:23 pm
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by bftiedt » Mon Dec 20, 2010 10:11 am
i didnt use a jumper for j200 i just soldered the tips together . also when i turn on the box it says dec but its very light so not really sure...
usbbdm
Junior Member
Posts: 8962 Joined: Mon Jul 18, 2005 9:33 pm
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by usbbdm » Mon Dec 20, 2010 12:21 pm
Why solder? You must use jumper since you need to remove it once DEBUG goes on.
bftiedt
Junior Member
Posts: 53 Joined: Sun Oct 25, 2009 6:23 pm
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by bftiedt » Mon Dec 20, 2010 3:06 pm
didnt have one and i had done it like that before. i was just going to unsolder as soon as debug came on but it never did
usbbdm
Junior Member
Posts: 8962 Joined: Mon Jul 18, 2005 9:33 pm
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by usbbdm » Mon Dec 20, 2010 4:30 pm
Use
"speed 2"
"tap c"
" tap a ffffffff"
With J200 on must give you the DEBUG ON.
Unless you have used the wrong jumper.
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