I have denim and a bad camera shake problem. I have read that some people have fixed this by flashing another rom.....specifically the Rm-937 Finnish rom.
The shake issue I know is not specific to any variant of the 1520. I have performed a full reset/ hard reset a few times, and that doesn't do anything, but just a fresh install of what is already on there.
I know it may be risky, but wondering if it will work....aside from radio/data issues.
Thanks for suggestion. I already tried Windows Recovery Tool......it DLed and installed........Denim and no change to the camera. And it appears way more buggy now. I also e experience most of the issues, as described elsewhere like random ghost taps, etc.