Certainly, there isn't the USB but i see that there are pins for GPIOs and GND 5V / 3v3 so i believe soldering pins are Alright to flash and afterwards to electrical power on :-) here are some example generated address pairs. don't use these ones if you don't want https://1-webdirectory.com/listings12702505/the-fact-about-trc20-browser-that-no-one-is-suggesting