Secure firmware update on out-of-order data delivery

A method comprising:

• receiving into a buffer memory of a memory device, from a host device, a plurality of data fragments, the plurality of data fragments having an initial order that is different from the order received at the device, and the plurality of data fragments constituting a firmware image;
• generating an ordered list of fragments using metadata stored in the plurality of data fragments, the ordered list of fragments including an entry for each of the plurality of fragments, and the ordered list of fragments providing a logical reordering of the plurality of data fragments back to the initial order;
• generating a data transfer control list including an entry for each of the plurality of data fragments, each entry of the data transfer control list including instructions for the controller to transfer a corresponding data fragment to an address in the temporary memory using information stored in a corresponding entry in the ordered list of fragments;
• and
• executing commands to transfer the plurality of data fragments from the buffer memory to the temporary memory using data stored in the entries of the data transfer control list.

A non-transitory machine-readable medium including instructions, which when executed by a memory controller of a memory device, cause the memory controller to:

• receive into a buffer memory of the memory device, from a host device, a plurality of data fragments, the plurality of data fragments having an initial order that is different from the order received at the device, and the plurality of data fragments constituting a firmware image;
• generate an ordered list of fragments using metadata stored in the plurality of data fragments, the ordered list of fragments including an entry for each of the plurality of fragments, and the ordered list of fragments providing a logical reordering of the plurality of data fragments back to the initial order;
• generate a data transfer control list including an entry for each of the plurality of data fragments, each entry of the data transfer control list including instructions for the controller to transfer a corresponding data fragment to an address in the temporary memory using information stored in a corresponding entry in the ordered list of fragments;
• and
• execute commands to transfer the plurality of data fragments from the buffer memory to the temporary memory using data stored in the entries of the data transfer control list.