Spart rebooting every 30 min

My spark reboots every 30 min or so, it is connected through USB and the external power supply so shouldn’t be a power issue.

Could you please run brewblox-ctl log?

If you export your EEPROM, I can make an exact copy of your spark: brewblox-ctl particle -c eeprom.

My brewblox-ctl log: