I have a Verizon LG G2. It was rooted with stump root. I mistakenly did an OTA update recently. Now i am getting the LG logo then fastboot mode started. I did NOT install any custom recovery. I have tried to get into download mode with Volume up and plugging in USB and it goes back to fastboot mode. Ive also brought up the hard reset screen and proceeded to erase all user data and it goes back to fastboot mode. Im using a Dell 64 bit with Windows 8.1. It will not recognise my phone at all. Ive spent 3 days on every site i could find. Ive downloaded every LG Driver + erase all drivers on the Computer. Im not to savy with files and promts etc. I just recently downloaded a UniversalAdbDriverSetup.msi. Nothing either. Please help