3) Download Rooted Stock Firmware for AT&T LG V10 H900: rootedsystemh900.zip.2) Download LGUP flash tool: lgupnew.zip.This will also install your device driver. 1) Download ADB and fastboot driver for windows or ADB and Fastboot for Mac and install it on your PC.Ensure that your phone has at least 50-60% charged to prevent the accidental shutdown in-between the process.įiles required to Root Verizon and AT&T LG V10–.It will erase all your personal data including data of internal storage, so we advise you first to take a complete backup of your phone and then proceed.We are not responsible for any damage of your phone.