boot:0xb (HSPI_FLASH_BOOT) can be a hint: that points at some strapping pin that's not at the right level. Suggest you check those. Wrt corrupted bootloader: on ESP32 chips, the bootloader is in mask ROM, so aside from physically damaging the chip, there's no way to corrupt it. Well.... turns out I...

Any ideas from anyone? I don't really need to save that one esp32 wroom, I can just toss it, but I am very curious about what caused this bootloader failure. I pulled a fresh pcb and soldered another esp32 to it and so far the serial code upload is working fine, so hopefully it stays that way, becau...

Hello, I created a simple breakout board for ESP32 module, it's just the module itself with some filtering caps on power rail and hooked it up to my FTDI uart to serial converter like so RX -> TX TX -> RX GND -> GND 3.3 -> 3.3V Then yesterday I tried uploading a simple blink sketch with serial print...

Hi, hopefully this is the correct forum category for this. I want to use jtag with esp-prog to program and debug my esp32 wroom modules (with platformIO), but sadly they all come preloaded with a firmware from the factory which makes use of the pins that are needed for the JTAG protocol. This means ...