I suggest to have a read here: Using Eclipse to Program Binary Files to an Embedded Target | MCU on Eclipse
So you could use the Segger interface (see above article), or you can convert the file in another format. I'm using the SRecord (SRecord 1.64 ) utility to modify and convert files. If you convert it to a binary, you can use the MCUXpresso built in flash programmer as well.
I hope this helps,