The computer lost communication with the device. Try changing your USB port (use a USB 2.0 port instead of USB 3.0), replacing the cable, or reinstalling the VCOM drivers.
AndroidMTK.com originally focused on MediaTek (MTK) chipset-based devices, hence the name "Android MTK." Over time, it expanded to cover Qualcomm, Spreadtrum (Unisoc), and other chipsets. The category page— https://androidmtk.com/category/download —serves as a master index for all firmware files hosted or linked on the site. The computer lost communication with the device
This occurs when the partition table layout of the new firmware differs from what is currently on the phone. Switch the drop-down option from "Download Only" to "Firmware Upgrade" and try again. Do not use "Format All". replacing the cable
Open the zip file. A legitimate stock ROM should contain: it expanded to cover Qualcomm