Everytime I flash new firmware to my Spark Core, it flashes magenta and goes to the usual routine, but then when it resets it goes into DFU mode!. This happens of course without touching anything.
I download the bin and flash it directly using dfu-util and everything works fine. Except if I try to flash it again from the cloud! It goes again into DFU mode.
I tried factory reset, new firmware install using dfu-util, etc, etc, etc… Any ideas? Is this a boot loader problem?
UPDATE: It does this no matter what code I flash to it. I tried several proven firmwares I wrote that run smooth on other devices.