@ blue_led
Thank you for your reply. I checked and both are already set to zero, which I guess doesn't explain my case, and this suggests that my device has a higher chance of continuing this out of the blue restart thing, even after flashing, as I understood from what I read.

Anyway, I flashed to PR 1.3 last night. No reboots so far, but I need to test it a lot today as I fell asleep short after flashing last night.

Thank you for your support guys.

I'll update if I have further reboots.