SFU Library not working for MKRNB1500

[Pinkert7]

Hello,
The SFU library is not working at all for the MKRNB 1500, and I suspect it doesn't work for other boards as well.
I followed the instructions and tried loading the binary code using the SFU_LoadBinary, and I was able to load the binary code successfully to the flash storage, but when I reset the device it doesn't perform the firmware update and just loads the SFU_LoadBinary file again.

I tried reseting the device using NVIC_SystemReset() in code, using the reset button and powering the board off and on - with no success.

Am I missing something?
Thanks!