This morning I have populated and "baked" 7 XSBO boards in my reflow oven. The operation was fully successful and all boards work perfectly.
The picture shows the test software flashing process. This is done thanks to an LPClink module. During the test, the board is supplied bya CR2032 coin battery (3 Volts).
Each I/O port is then checked with the oscilloscope probe.
The 6 boards of the upper row have already been flashed and tested OK.