CCS / CC2640R2F：How to separate APP from STACK to generate HEX file

Which SDK are you using? All the example in our new SDK combines STACK and APP image.
You can download the STACK here:
dev.ti.com/.../

To get started, I will recommend you to do the SimpleLink Academy, which has the training for basic BLE and our software solution.
dev.ti.com/.../overview.html

I want to separate the STACK and the application's hex file, I just want to update the application code, what should I do, I am using MSP432 + CC2640R2F to try to update the code to cc2640R2F via OAD. But MSP432 doesn't have enough flash todo, that's why I want to separate hex files

i use simplelink_cc2640r2_sdk_1_40_00_45

You can find the information in our SimpleLink Academy: dev.ti.com/.../ble_enhanced_oad.html

Since you just started the development, I would recommend you to start with newest SDK :
dev.ti.com/.../

no I'm sorry,i use msp432+cc2640R2F,you just let me watch cc2640 oad program.
First i use this simplelink_sdk_ble_plugin_1_40_00_42\examples\rtos\MSP_EXP432P401R\bluetooth\oad_firmware_update.
this is example which i learn in MSP432,but bluetooth chip i choose cc2640r2f.
second i use simplelink sdk explorer(ios) to comply oad.
third this example give me choose to update cc26xx code or MSP432 code.
I use simplelink_cc2640r2_sdk_1_40_00_45 just what to generate hex file to check though MSP432 update cc2640.my problem is ,Hex file is huge,so i want to konw how to generate little HEX file；
I just saw cc2640r2f combines STACK and APP image. so i think maybe if i generate application HEX file,it maybe is enough small.
so wht's your suggest