Hi,
The original binary in the board is a TouchGFX demo. We have it posted under the Downloads tab of the board page: http://nxp.com/demoboard/om13092
There is also the sprinkler/irrigation demo there plus instructions on how to flash the demo.
The current instructions recommend flashing your debug probe with the J-link image to program the demo, then using SEGGER's J-flasher lite utility. We'll plan to get binary version of the images later so you can also use MCUXpresso IDE's flashing utility, available in the IDE.
Unfortunately we have a temporary issue with the link but are working to correct it now, and it should be up and working within an hour or so.
[UPDATE: content is now working/available :-)]
Regards,
Brendon