Excellent! thank you very much @dissent1, to conclude - all I need to do is connect to UART using USB to UART, connect USB stick with the compiled files and with serial access program, putty for example I can start typing the commands.
Some other questions:
Is there any special soldering need to be made (shorcut) to get UART configuration?
I find in google the following pads layout, please correct me if I'm wrong: PAD 1(next to dot): CS, 2:MISO, 3: WP, 4:GND, 5:MOSI, 6:SCK, 7:HOLD, 8:VCC.
Is there any limitation on the UART to USB cable? or do I need USB to UART TTL cable? I do have a very cheap "CH340T CH340G USB to ESP8266 Serial Wifi Module Development Board Adapter", which I bought in the past for ESP8266 development, is it expected to work?