Hi guidol, thank you for your support. The problem is for all 50 pcs of NANO PI NEO 1.31; "restart or shutdown -r now" is scheduled on cron, but is the same to run it manually. Nanopi Neo v. 1.31 is powered at: - 5V - 2 A / 2,5 A / 3 A (I tried various combinations.) I tried to use various...