That is the only one i don't have. It could cause this problem?

Okay, thank you. I will check if my other PCB's don't have this behaviour

The ESP32 Wrover is soldered by JLCPCB (so i hope they know how to solder).

This is my normal boot:

rst:0x1 (POWERON_RESET),boot:0x33 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:2
load:0x3fff0018,len:4 ...

I already have a 10K resistor between IO0 and 3.3v, a 10K resistor between EN and 3.3v and a 0.1uF capacitor between EN and GND.
It still sometimes boots into "download" mode.

Hello,

I have built my own PCB for an ESP32 WROVER.
The PCB also has a reset button (from this url: https://www.espressif.com/sites/default/files/documentation/esp32-wrover_datasheet_en.pdf)

But once in a few times (say 1 in 10 / 1 in 15 times) it doesn't restart but comes in the "waiting for ...

Thank you for your reply.
If i can use the internal storage that would be great too.

I don't quiet understand the partitions in ESP32.
My firmware now (which is not done yet) shows this:

RAM: [= ] 11.5% (used 37632 bytes from 327680 bytes)
Flash: [===== ] 51.1% (used 669303 bytes from 1310720 ...

Hello,

I am using an ESP32 with the posibility do update over te air via a http server. I want to prevent update corruption as much as possible and i am having the idea of having an extra flash memory on my pcb (a few mb's) with a default base firmware installed.

When the ESP32 is unable to ...