I found a way to turn off R&D mode. We need to write in regular intervals on /dev/watchdog and /dev/twl4030_wdt. Can someone check it? I'm a little less than 500km from my micro usb cable and I can't try it. I've also sent a PM to Dj_Steve.
echo "1" > /dev/watchdog echo "1" > /dev/twl4030_wdt