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[Equip] Cisco DPC 3939 xb3

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I bought a new unit of this from ebay and after going through a few telephone calls got it finally recognized with my triple play (non X1) account. But after only 12 hours, the modem has got to a state where it just has all the lights solidly on (as if it is doing a POST) and never recovers from it. I suspect a firmware downloaded into it may be the cause. Has anyone run into this situation before and do you have suggestions of getting this modem back working Thanks

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