Credit to dan-av
1. Delete the file from hwrmdefaultlighttargetmodifierplugin.dll ROFS2/sys/bin
2. Put the replacement of the attached file salightsservice.theodore.dll in ROFS2/sys/bin
With this Fix menu button will not light up brighter than the other, will not blink before turn off the lights all buttons, etc.
Swipe to unlock must be run from the first time by pressing the menu button.
You can also use the patch for the ROM Patcher which turns off the backlight buttons. After activation, the patch need to lock and then unlock the phone side slider. If you have missed calls or messages menu button will blink if it is turn on in settings
Link Download :