I think I wrongly programmed my Sodaq Sara device, and since then it's not recognized via usb anymore. When pressing the reset button twice (blue led blinking, bootloader mode) the Arduino IDE does recognize it. I would like to re-burn the bootloader to see if it solves the issue. Which bootloader should I burn?
By the way, which board should be used as target when programming the Sodaq Sara? Because the doc  suggests it's Arduino M0, but Arduino IDE recognizes it as "Arduino/Genuino Zero (Native Port)". I guess I selected a wrong target, and that's the reason why it's not correctly working.