Flash arduino firmware to ASR650x

Hello, my host computer have only RX, TX and RTS pin. It is possible to flash arduino firmware using only these pins?


what is your board’s name?

I’m using WirenBoard 6. Expansion port of these board have following pinout.

Sorry, I didn’t express my meaning clearly.

I mean that what is your heltec board’s name?

CubeCell Arduino Module - https://heltec.org/project/htcc-am01/


if you want download the program with arduino, your module have to enter the bootloader mode.