Now I got it worked. Successfully flashed esp with flash download tool.
Don't have particular answer what was wrong.
VCC is still the same, maybe enable/boot pin was not pulled in full (but I don't change resistors) or something else.
Anyway, thanks for participation!

It looks like the right data but in the little endian order rather than big endian. I expect that is a setting that can be adjusted in the tool prior to connection Hi Scott, I don't see endian order issue here. esptool expect 0x15122500, but got 0x20120707 - changing endian order will not help. It ...

Hello, I'm trying to communicate with ESP32-WROOM-32U module with help of esptool, but while detecting the chip type esptool gets not expected for ESP32 chips value for register 0x60000078. Detecting chip type...TRACE +0.010 command op=0x0a data len=4 wait_response=1 timeout=3.000 data=78000060 TRAC...