I have searched high & low for either one of these so called files ? Can any shed some lite as to why their is every other samsung pit file out there except for SPH-M840.....Why ? This phone WILL NOT fix for some reason or another it's always the black screen, or blue screen of death or maybe i'll get red or green lines up & down on the screen, I have tried almost everything so any help would be great, also ADB doesn't pick up the device ?