I don't recall TWC bricking any 6120 modems but we have not used that one in Hawaii so I suppose it is possible I missed this happening...unlikely though as I read this forum regularly and have since before I joined this site back in 2001.
You guys don't seem to realize that it is RARE for TWC to upgrade the firmware on any of their modems. In the almost 12 years I have had Road Runner, I have seen TWC upgrade the firmware on Surfboards TWO times only. The first time, I was responsible for forcing them to either upgrade the firmware on the SB 4100 due to a security problem or face lawsuits. Since every other cable ISP of reasonable size world wide had, a year or more earlier, upgraded the firmware to fix the security hole EXCEPT TWC which was still on the original factory issued firmware version, TWC didn't have much choice when I challenged them on it. They agreed to push a firmware upgrade across all divisions (not just Hawaii where my complaint started out) and agreed to start keeping timely firmware updates as Comcast and others were already doing.
They pushed the firmware update shortly afterwards. Their excuse for ignoring the security update for so long when other cable companies pushed it as soon as Motorola released it was that they had bricked some modems once with a firmware update...but that was many years ago...*long before the 6120) and a rather feeble excuse since other cable companies had updated the SB 4100 firmware multiple times with no ill effects. The other firmware update pushed by TWC between 2001-2013 was to make my SB 5100 DOCSIS 2 capable.
I got the SB6141 from Oceanic TWC when I upgraded to 20/2 recently. It was a brand new one still shrink wrapped and had notes with it in its factory box. It has the firmware from 2011 that you guys are griping about TWC not updating your personal bought ones that have that firmware. Why would TWC update yours when they have not updated their own? They won't push a firmware update unless absolutely necessary. TWC is notorious for this bad practice and they have not kept up that part of the agreement we reached many years ago.
When governments fear people, there is liberty. When the people fear the government, there is tyranny. Thomas Jefferson