I'm having trouble with my LG G3 LS990, it came with modified software (was marked as Verizon 985) and stuck on android 4.4.2, i even tried to download an update when using the phone but it failed when it tried to install, i tried with the mobility support tool but i couldn't update the phone, so i tried to flash another firmware (the stock one for Verizon 985), it was stuck at 10%, then i disconnected and reconected several times, i used LG Flash Tool 2014 and LG Up, i tried 3 different archives, 2 was KDZ and one was TOT (which is android marshmallow), i accidentally tried the refurbish mode with the TOT Marshmallow and then canceled, i came back to upgrade mode and i could get 11 porcent progress on LG Up flash tool and 1 porcent on the Firmware Update screen on the phone when trying to flash (and the same results on LG Flash Tool 2014), it was stuck again so i disconnected, removed the battery and tried again but my smartphone won't go on firmware update mode anymore, when i hold the volume up button while connected to my computer it goes to the firmware update mode for about 2 seconds and a message at the top of the screen says "Boot Verification Fail!" "Cause: MISMATCH_SIG_LEN" and then the screen turns of, the led starts popping with blue and red and when i press the volume up again the led stops popping but the smartphone stills on, when i start the phone normally it shows the LG logo and then it shows the android bot showing some gear moving on his belly, and then it restarts and goes directly to the LG Logo and stops on it while the Led pops in blue and green. I can even go into System recovery mode but nothing works, the USB Debug mode or the Factory data reset. When the smartphone is connected to my computer it doesn't recognize the smartphone anymore, when the LG Logo is showing and i go in the Device Manager it shows "LG Mobile MTP Serice" but when i use the LG Up for example, it shows the smartphone as an unknown device and i can't do anything, the same happes to the LG 2014 Flash Tool, when i try to flash it goes to 4 porcent and then says that the smartphone is not connected. I'm into this for 3 straight days, any help? I'm a noob, i really need som help.
Last edited:
