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STM32F105 Spontaneously Erased

Question asked by Stephen on Jun 2, 2012
Latest reply on Jun 5, 2012 by Stephen
I have not received back two units with an STM32F105 that appears to have been erased in the field.  The units are sealed, and show now signs of tampering.  When received there is no response.  When we connect the JTAG and re-program the STM32 the system works perfectly.  Has anyone seen this, and how do I prevent if from happening?