Lenovo A218T Stock ROM
- Download Stock ROM From Above Links To Your PC.
- Rename To update.zip and copy to sd memory and insert into phone.
- Now Reboot to Recovery Mode.
- now install update.zip through recovery.
important note :- backup your important data first before do any thing. and if your imei is damaged after flashing click here or here or here to repair it
credits :- xda_firmware