1. Download the Lucky Circuit Breaker and install it.

2. Open the main interface of Lucky Crack and click "Toolbox". As shown (lower left corner)

3. Open the "Toolbox", as shown in the figure, and then click "Android Core Cracking".

4. Click "Android Core Crack", as shown in the following figure:

5. Crack the core, check the first three items, and then click "Apply". The phone will automatically restart. Then you can install the software that failed to install before.

The operation is over.