hi guys, yes it happened to me this problem with white flash display, but after i change the screen, everything was normal, working fine now, i don't no how, my old screen working good with the k800 firmware but white flash with k810 firmware, so in this way i solved the problem: change the screen and if you are lucky your phone will work again normally. it's not a specifically tipe of screen just another screen for k800. i hope to not be problems with the your gdfs. good luck.