Secure over the air upload mechanism for wireless mesh nodes

A method of transmitting a block from a bridge to a mesh network, the method comprising:

• transmitting, by the bridge, the block to at least a first node of a plurality of nodes of the mesh network, for distribution through the mesh network, the block comprising a plurality of packets, wherein the block is part of a firmware update or a software update;
• receiving, at the bridge from the plurality of nodes, a plurality of status packets, wherein each of the plurality of status packets indicates reception status of the plurality of packets at a respective node of the plurality of nodes;
• selecting, by the bridge, at least a first packet of the plurality of packets for retransmission to the mesh network, based on the plurality of status packets;
• generating, by the bridge, a retransmission block including at least the first packet of the plurality of packets, wherein the first packet is included in the retransmission block a number of times based on the plurality of status packets;
• and
• transmitting the retransmission block to at least the first node of the plurality of nodes, for distribution of the retransmission block through the mesh network.