What is the or "S/N" on the back of the device?
Usually caused by a driver issue or a bad USB cable. Try a different port. What is the or "S/N" on the back of the device
Search (Ctrl+F) for the word "FRP." Note the Linear_Start_Addr and the Partition_Size . Search (Ctrl+F) for the word "FRP
In the tool, click the "choose" button next to Scatter-loading File . Navigate to your extracted Lava Z70 firmware folder and select the Android scatter text file. Turn off your Lava Z70
Turn off your Lava Z70. Hold the Volume Down or Volume Up button (depending on the specific hardware revision) and connect it to the PC via USB cable.
To help you get the exact version for your phone, could you tell me:
Ensure you are holding the correct volume key while connecting. If the phone is "dead," you may need to disconnect and reconnect the battery.