Well, I just downloaded the new software update. Sadly, the lock screen memo is still very dim, and I still can't see any way to increase the brightness so that I can actually read it. It's pointless having a function if you can't use it.Also, to my eye, there doesn't seem to be any improvement in the colour saturation between natural and vivid modes. But perhaps that's just me. PS just adjusted the saturation on the advanced settings. The lockscreen memo is still very disappointing, and dim.