Hi Diana,
I tried whatever you provide, still its not switching to Application.
PC going to that entry function after that its going to UART receive function.
Through UART i am going to receive the App binary.
Please see the below images for more details.
1. UART receive function(After calling to entry function, PC going to LPUART_DRV_ReceiveDataBlocking function)

2. Jump To App function

3. main_boot() program execution sequence

i have tried with UART Receive data with non blocking function.
Please help me for switching the execution to Application.