Secure booting error code 1003

[Tobuta091336]

Good morning, I'm from Panama, my LG G4 H815 is brick, only turn on and turn off with secure booting error code 1003 in screen, it doesn't enter in download mode, I need your help, thanks.

 

[rgd1101]

MERGED QUESTION
Question from Tobuta091336 : "How to fix secure booting error, code 1003 in my LG G4 H815 International, it does not enter in download mode, only turn on an"

How fix the error 1003 in my LG G4 H815, it does not pass for LG logo, only turn on and turn off, with error in the screen secure booting error, help me please... ⛳

 

[webworkings]

Did you per chance try rooting the phone? That can lead to this error.