TMS320F28388D : How to change the entry point ,not sector 0 but another sector

Hello.

I'm trying to two program( bootloader / application) on CPU1 flash. 

Now, bootloader located Sector0~Sector3, application is located Sector4~13.

When booting, First bootloader operate and jump to application (Sector4).

But, I want bootloader to located lower sector (ex. sector9~).

In the usermanual, It is possible that flash entry address programmed.

I can't know, How run it.

Pleas Tell me how to do it.

Thank you!