Use this method if your device still boots up normally and you have a standard .zip update file.
Recent identified versions include V84711321.0045 (B866V2-H) and V86111338.0026 (B866V2F). How to Flash Firmware zte zxv10 b866v2 firmware
Click on -> Import Image and select your downloaded .img firmware file. Wait for the tool to verify the image package. Step 2: Connect the Box in Burning Mode Use this method if your device still boots
Follow these steps carefully to flash new firmware via a computer. Step 1: Prepare the Software zte zxv10 b866v2 firmware