so i had the LCD screen replaced on my Nexus 4, and it seems the LED notfcation light doesnt work. I decided that it was a faulty screen, so i went back the shop i had it fixed, and the guy gave me a new a screen. This is Still happening. Lightflow does nothing, and even the few things that do use it without 3rd party apps dont work. now im on stock 4.4.2 with an unlocked bootloader. should a try flashing the stock ROM again to see it if will help?