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Programming the firmware at manufacture is usually done

  • A.by the customer on first use of the product
  • B.through a debug or dedicated programming interface on the jig
  • C.by fitting a separately pre-programmed memory device to each unit
  • D.over the product's own radio interface

Answer: B

The jig holds the board, provides power and drives the debug interface, which also lets it run the functional test and write the calibration in the same operation. Serialisation and provisioning of keys are commonly done at the same station.

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