Hi

I have the problem that my raspberry is always restarts, when i don't expect it to do.

There are two scenarios, USB powered and not powered.

Powered:

5 minutes after entering sudo halt on the raspberry, it is rebooted. The SYS LED is always on until shortly before rebooting, when it starts flashing.

Disabling the POGO pin connection prevents the rebooting.

Not powered:

After unplugging the USB the raspberry is correctly shut down after 1min. However 10s after all LEDs  are off, the red LED on the raspberry turns on and the raspberry is booted. After 1min the raspberry is then shut down again. So we are now stuck in a loop of shutdown & restart powered only by the battery.

Disabling the POGO pin has no effect.

In both cases i2cget -y 1 0x69 0x22 w return 0x0033.

Firmware: 133 (same behaviour with 12A, but not tested in depth)

RPi: 3 model V Rev 1.2

PICO: PCB version: 0x41 model: B Stack

tested with both battery types: PIco LiPO 1000mAh & PIco LiPO 450mAh

A second PICO (same but not updated) with the same raspberry & battery runs without these reboots.

I tried to UR + B for default start and uploading new (133->12A->133) firmware but no success.

Any ideas where the problem could be?

Best Regards

Rondo