Hi @ManikantaRobbi ,
Thanks for your updated information.
Ok, ARM Cortex M7 can be found, just can't download the code to the external flash, right?
Now, follow me to test it with debugger and IDE.
Please download the RT1176 SDK, then run the SDK project in the internal RAM.
1. Download SDK:
https://mcuxpresso.nxp.com/en/builder?hw=MIMXRT1170-EVK
2. import the SDK project to the MCUXPresso IDE:
SDK_2_14_0_MIMXRT1170-EVK\boards\evkmimxrt1170\driver_examples\flexspi\nor\polling_transfer\cm7

Run it in the internal RAM.
Test the result, whether you can pass the external QSPI flash read, erase , program or not?
Please check it.
If the test is passed, then you can download to the flash again.
Wish it helps you!
Best Regards,
Kerry