Why wont open my lg g3 ?

[34523623]

I have updated my Android system version 5 to 6.0 marshmallow.
now I try hard reset and my lg g3 wont open,its stay on startup screen.
what can i do?

 

[B. Diddy]

Welcome to Android Central! Was this an official over-the-air system update, or did you download it manually from somewhere on the web?

 

[34523623]

I downloaded it from unofficial web, from forum: [Guide] LG G3 Stock Firmware (Go Back to Sto… | LG G3
I still have guarantee time and today In guarantee office they told me that the problem will be solved.
they sent my LG G3 in other city to fix problem.

P.S I didn't say that i updated android version. lol

 

[Morty2264]

OP, what is your situation like now? Any progress past the start-up screen?

 

[34523623]

I contacted them and they told me that the problem is likely a motherboard, also said that the board be replaced.

You would think that the problem is caused by the android system was changed by me to android marshmallow 6.0?
is it really damaging for motherboard?

 

[B. Diddy]

I'd guess that there was a problem with the firmware file you used to update the phone. Are you absolutely certain it was for your exact variant? If, for example, you have an AT&T variant, and the firmware was for the Verizon variant, that might cause significant problems.

 

[34523623]

im absolutely certain unofficial Android new version was a problem

 

[Morty2264]

im absolutely certain unofficial Android new version was a problem

Are you going to send your phone to LG to have it repaired? Keep us updated!

 

[34523623]

No,already no,because the problem is fixed,My LG G3 back,its working and also i think i dont have a right to send my phone to LG.
the motherboard changed with guarantee and the problem is solved now. and they also change my battery.

Does anyone know where i can get update my Android Version 5 to 6?

 

[damonator98]

What version of g3 do you have? 16 or 32 gb?

 

[34523623]

32 GB. after motherboard change i still update android version to 6.0. But with LG PC TOOL it works so nice