I am designing a board that will use an Xbee3 micro module.
I want to allow firmware upgrade from XCTU once the module is soldered to the board.
I read in the manual, that I need to wire VCC, GND, DOUT, DIN, RTS and DTR.
Can you confirm that if I put a header with those pins on my board, and connect those to an usb/serial controller (like the little Xbee grove board), I can upgrade the firmware of the Xbee3 micro with XCTU?
Of course I’ll ensure the board micro controller leaves UART pins floating while the board is connected to the PC.