FLASH Handle recovery after power down

Hello All,
I am working on a security device (using Q2686) that requires storing data into FLASH menory.
I believe the handle returned by the adl_fhlSubscribe() is stored in RAM.
So after power is removed from the device and powered up flash,
how I can get back the original FLASH handle and retrive the data that already stored in FLASH?

Appreciate who has any suggestion for this issue.
Thanks a lot.