I still get no luck with 2.1.6. It flashes OK, Android ring etc, I get the Himedia logo when it boots, and it quickly finds the time on the front display, albeit 2 hours ahead of BST, so it looks like it has started up ok, just not dispaying through HDMI apart from 4 seconds of the boot Himedia logo. Should I try to hook up the TV using composite and reset video out options?
Added today:
Just realised my TV does not say 'No Signal' with the blank screen, HDMI, as it does if nothing is connected, so it must be getting a signal from the Q5, just that the TV won't display the picture? Any way to alter the output mode without seeing the picture?
Going back to 2.1.4 again!