Hello!
I have LG K8 K350N with play single sim and I have this problem - when uploading new software using LG Flash Tool 2014 I have this message and the firmware does not want to upload further:

All USB drivers etc. are installed. I would like to add that the phone cannot be accessed because there is a pin code from Play and I bought a broken phone because I wanted the motherboard for a second phone.
Can anyone help me to upload this firmware?
I have LG K8 K350N with play single sim and I have this problem - when uploading new software using LG Flash Tool 2014 I have this message and the firmware does not want to upload further:

All USB drivers etc. are installed. I would like to add that the phone cannot be accessed because there is a pin code from Play and I bought a broken phone because I wanted the motherboard for a second phone.
Can anyone help me to upload this firmware?