[Q] OS from other device and problem with going back( LG D331) - Android Q&A, Help & Troubleshooting

Hi,
So I end up with a problem. I have LG L Bello D331 and i have installed stock LG rom for Bello D335 - the difference between the two is that D335 is dual sim and D331 is not and this rom was lollipop 5.0.1 ( I have installed it because my region which is Poland didnt get lollipop yet) and everything was looking fine but then I have noticed that the GPS is not workig so I decided to go back to Kitkat for Poland and i can't
I used lg flash tool 2014 but now its not working with D331 software. I tried installing kitkat for D335 and it flashes with no problem but gps is still not working. Is there any way to install rom for my region or have I lost it? I need GPS badly
And the strangest thing happened today, I was driving and all of a sudden gps start working in google maps so i run gps test and signal was good for maybe 5 to 10 minutes and then it was gone and still is gone (But the device is seeing satellites just the signal is none)
I tried changing gps.conf, downloading agps files and nothing seems to work. Can pleas someone help me? maybe its not the system idk, I need help
Sorry for my english ;p

_First install TelCel android 5.0.2 D331 firmware
_install kitkat for LG D331

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I have used unlock code to use my LG Optimus G (Att) in Russia. It was working fine until I have found the strange thing about it. When I tried to update it to android 4.1 it didn't let me to it and showed authorization error. Also in the settings- phone identity- my phone number is set as unknown. I don't know what to do!
vladislav77 said:
I have used unlock code to use my LG Optimus G (Att) in Russia. It was working fine until I have found the strange thing about it. When I tried to update it to android 4.1 it didn't let me to it and showed authorization error. Also in the settings- phone identity- my phone number is set as unknown. I don't know what to do!
Click to expand...
Click to collapse
Current Android version on this model phone is 4.0.4.
4.1 has not been released.
Yeah, there is no 4.1 update yet (at least for the AT&T version).
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Hello every one,
I am sanju few days back i ge replaced my lg g2 screen , i don't whether it's authentic screen or not because i get replaced it from local store instead of lg store , ok but now the problem is whenever i tried to upgrade my lg g2 to lollipop it doesn't upgrade to it , i have not received any OTA update so i am trying to upgrade it from the lg PC suite but whenever i tried to upgrade i got the following as shown in below attachments (sorry my bad english).
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sanjuoo7 said:
Hello every one,
I am sanju few days back i ge replaced my lg g2 screen , i don't whether it's authentic screen or not because i get replaced it from local store instead of lg store , ok but now the problem is whenever i tried to upgrade my lg g2 to lollipop it doesn't upgrade to it , i have not received any OTA update so i am trying to upgrade it from the lg PC suite but whenever i tried to upgrade i got the following as shown in below attachments (sorry my bad english).
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Sanju
Click to expand...
Click to collapse
Put your imei no. in this page and check for latest firmware available,
It will show msg like, "Download firmware, version V30 or V20"
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Edit: from next time, don't start a new thread !!

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