The solution ended up being:

* the 470R resistors in the EN and IO0 branches had to be removed and short-circuited
* The 100 nF capacitor in branch IO0 had to be removed. (this is important)

What I noticed is that if no serial port program is connected (e.g., PuTTY, RealTerm, ...), then when I press the EN (RST) button, nothing happens. But as soon as there is a program open on the serial port, the EN button works. That is, it can be restarted.

build_flags = -DCORE_DEBUG_LEVEL=5 (platformio.ini) (20 times, after flashing): ... [WiFi] WiFi is disconnected [ 3284][V][WiFiGeneric.cpp:362] _arduino_event_cb(): STA Disconnected: SSID: gentoom, BSSID: 18:e8:29:fb:75:08, Reason: 15 [ 3285][D][WiFiGeneric.cpp:931] _eventCallback(): Arduino Event: ...

"The linked minimal example doesn't work completely. At startup, it displays: '[WiFi] WiFi Status: 0' (20x) and doesn't connect. Then I pressed the EN (RST) button, and after a few connection attempts, it connected to the WiFi."

It works well and stably in a minimal sketch (e.g. LED flashing only).
Are you thinking that the 10 uF capacitors with the AMS1117 might be low?

Hi everyone! I've made a multi-channel temperature measuring device with an ESP32-WROOM-32E (4MB) microcontroller. The measurements work fine, but the connection to the WiFi AP is very unreliable. Sometimes it connects almost immediately after powering on, sometimes it takes several minutes, and som...