There's an internal pull-up on IO0 and pulldown on IO2, no need for external resistors. https://www.esp32.com/viewtopic.php?t=5970 Gotcha, I did that just because many esp32-based breakout boards include that resistors. Tomorrow I'll try with a new wroom module and let you know if the first one was...

You are right in that an ESP32 should respond to download mode regardless of what's in the flash. Perhaps you can use a serial terminal (at 115200 baud) to see what the ESP32 spits out when you press the reset button? That may help debugging the issue. Thank you for your reply. I did this test alre...

Hello everyone, I bought a bunch of esp-wroom-32u from mouser to use them on my project. I made a cp2102-based programmer too with s8050 npn transistor with a connector to hook it up easily to my main pcb with esp32 attached. I soldered it perfectly along with: Gpio0 pulled up by 10k EN pulled up by...