If you decide to proceed, you must have the for your device and a reliable Windows PC. Below is a general guide based on best practices for most Qualcomm-based smartphones.
: This occurs when the initial handshake between the computer and the device fails. Fix : Switch the USB cable to a dedicated USB 2.0 port on the back of the motherboard, or reinstall the QDLoader drivers. msmdownloadtoolv2071rcsm new