 only the CRC-16 of the firmware. Bootloader version 0.5 or newer requires the Extended Init Packet. If the URI and path are not null the URI will be used.</p><span class="kdoc-tag"><h4 class="">Return</h4><p class="paragraph">the builder</p></span><h4 class="">Parameters</h4><div class="table"><div class="table-row" data-filterable-current=":lib:dfu/release" data-filterable-set=":lib:dfu/release"><div class="main-subrow keyValue "><div class=""><span class="inline-flex"><div><u><span>init</span><wbr><span>