This release of the bootloader and CANiap files listens for time sync messages from the main board to determine whether the bit rate is 1000, 500 or 250kbits/sec. Previous versions of these files worked only when the main board used 1000kbits/sec.
The Duet3Bootloader files are for installation on tool boards and other CAN-connected expansion boards. The CANiap files are for placing in the /firmware folder of the SD card in Duet 3 main boards used as expansion boards.