How can the serial number of the board be modified to ensure that multiple devices can be connected?
In particular, the USB mass storage needs to be guaranteed unique - currently it shows in udev as ID_SERIAL=Linux_UMS_disk_0-0:0 and in dmesg as
New USB device found, idVendor=0525, idProduct=a4a5
New USB device strings: Mfr=1, Product=2, SerialNumber=3