IDF v4.2 and esp_restart()

[cpehonk]

Hi all,

I use v4.2 of IDF and I call "esp_restart()" at the end of my OTA process. I expect reset reason "SW_CPU_RESET" after reboot, but I get "RTCWDT_BROWN_OUT_RESET". Brownout detection is enabled and does not fire all the time, the system is running. No drop is detected nor seen on the Vdd line. Any hints?

Greetings
Chris