So basically the problem is that every time I want to download via UART i need to disconnect JTAG. I'll just try to flash program via JTAG today and see if it works. I guess this would be solution to my problems.

Hello there!! I need some basic information from more experienced developers whether stuff I'm trying to do is even possible or not. I tried to connect ESP prog to devboard identical to this one: https://dl.espressif.com/dl/schematics/esp32_devkitc_v4-sch-20180607a.pdf with wrover-module-b installed...

I know it might be too late for this now but on one of the links from page you mentioned earlier there's an example: cd ~/esp/openocd-esp32 bin/openocd -s share/openocd/scripts -f interface/ftdi/esp32_devkitj_v1.cfg -f board/esp-wroom-32.cfg the second -f argument you need to change of course if you...