Do this if you cant flash due to there being a .dll and model number mismatch in download mode when flashing with lg flash tool
I took the rom I last flashed. Opened it. went to the system folder and extracted the build.prop (opened it with notepad). Press the find button in one of the drop down menus and find the model number your g2 thinks it is and change it to what it actually is.( in my cause mines had a d801 rom so it thought was one instead of an ls980) I changed mine from d801 to ls980. Saved it (make sure its saved as build.prop). Now go into the rom you originally got the build.prop from and replace it with the new one adb push the rom to the phone in twrp then flash it. Then boot into download mode and flash away
I took the rom I last flashed. Opened it. went to the system folder and extracted the build.prop (opened it with notepad). Press the find button in one of the drop down menus and find the model number your g2 thinks it is and change it to what it actually is.( in my cause mines had a d801 rom so it thought was one instead of an ls980) I changed mine from d801 to ls980. Saved it (make sure its saved as build.prop). Now go into the rom you originally got the build.prop from and replace it with the new one adb push the rom to the phone in twrp then flash it. Then boot into download mode and flash away
