Hello Maksas,

If the error "interface has been stopped", please read the following instructions to fix.

1. Turn off the phone .

2. Press and hold the following keys at the same time: Volume Down + Power key / lock buttons on the back of the phone.

3. Release the Power / Lock keyboard only when the LG logo is displayed, and then once again press and hold the Power / Lock.

4. Release all buttons when factory hard reset screen appears.

5. You should see the interface options, where you can select "Delete cache system", select this one.

6. Press the power button / lock the keyboard to continue
Note: Removing the phone pose a threat. All of the operations you do at your own risk.

If the problem persists, you can contact our support LG direct http: //www.lg.com/us ...


Hope this helps!

Sincerely,

Christian

Hi Maksas,

The best thing to resolve this problem is to clear the "system cache/Cache Partition". You can do it by following the below steps:

1. Power off your Android device.
2. Hold the volume DOWN and power button until the recovery menu appears (you'll see a screen like the one pictured in.
3. Press volume down until the word Recovery is highlighted, then press the power button to reboot into recovery.
4. You should now see a black screen. Hold down the power button and press the volume UP until you see the recovery menu.
5. Using the DOWN key, navigate until you have wipe cache partition highlighted. Press the power button to erase the system cache. Once the cache is cleared, use the volume DOWN button to navigate to reboot to bootloader, and press the power button. Your device should reboot back to the original menu. 
6. Using the volume down button highlight REBOOT and press the power button. Your device should now reboot into Android with a cleaned system cache and a much improved Lollipop.

I hope this helps.

Regards,
Lokesh