Here I have a friends w580, mine is white.
He told me the phone screen is completely black and it won't turn on.
So I though maybe that is a problem with the fw.
I checked and he had the fw R6 so I completely flashed it to R8BE001 main + fs.
Applied the cda later.
I turn on the phone and voila the screen is working again.
Used it for a couple of minutes and the screen is not refreshing like it should I think.
When it enters sleepmode and I try to wake it up it goes very slowly. and sometimes it stays black.
I applied a new customize and a new display driver, the one modded from Number1 and the one posted on Sliderwithstyle.
Here is a short video I made with my phone to show the problem.