-e-x-t-r-a_-d-e-v-i-c-e_-a-d-d-r-e-s-s.html">EXTRA_DEVICE_ADDRESS</a> - the target device address</li><li><a href="-e-x-t-r-a_-p-a-r-t_-c-u-r-r-e-n-t.html">EXTRA_PART_CURRENT</a> - the number of currently transmitted part</li><li><a href="-e-x-t-r-a_-p-a-r-t-s_-t-o-t-a-l.html">EXTRA_PARTS_TOTAL</a> - total number of parts that are being sent, e.g. if a ZIP file contains a Soft Device, a Bootloader and an Application, the SoftDevice and Bootloader will be send together as one part. Then the service will disc