Lenovo Tab 2 A7-30 hard reset
Lenovo Tab 2 A7-30 remove password by hard reset
Lenovo Tab 2 A8-50 hard reset (100% working solution)
How to Hard Reset LENOVO Tab 2 A7-30 - Unlock Tablet / Format
Hard Reset will erase all of your data
All described operations you are doing at your own risk.