For devices with heavily patched security (e.g., those with security patches up to January 2025 ), software-only methods may fail. ISP Connection
Open the ZTE B866V2 box. Locate the physical button near the USB ports or on the board used for flash mode. Connect to PC: Open the Effixer Tool on your computer. Zte Zxv10 B866v2 Unlock -FREE-
The ROM might not be compatible with your specific sub-version of the B866V2, or the "Erase Bootloader" option was not selected. For devices with heavily patched security (e
It will format the operator partitions and flash the clean Android TV system image onto the board. Zte Zxv10 B866v2 Unlock -FREE-
Click on the menu in the top-left corner and select Import Image .