We found an issue with the temperature sensor. Some of them have reprogrammed themselves (bizarrely!) into a different operating mode, and the only way to reset them is to desolder a pin. We have no plans to use this component in the player software.

(For reassurance, there is no anomoly in the failure rate of units used in extremely hot or extremely cold territories. The temperature sensor was included before we had any units in the field, but this has proven to be a non-issue).

Rob