Yep all good thanks to @swinks website, re-flashed and no jerky animations or rogue pixels.
The firmware is still v3.51 not v3.54 but not sure if that's tied to the hardware build or that's another file somewhere else
yes the files on my site are for the run-dmd, and no they don't like to be just turned off - at the power point or power blackouts.
the reason they fail and corrupt is the run program is on the SD card and if the power goes out during a image show to adds a fault to the sd card and then it is corrupted.
I set mine up with a 10pm to 6am off timer and just powers on between 6am through to 10pm.