Do I need a code restore switch?

If you are not using Over The Air Firmware Update (OTAFU), then you probably do not need a code restore switch.  A code restore switch is also not a hard requirement when using OTAFU, but it adds a layer of fault recovery.  The code restore switch allows the module to revert to a previous version of the code, in the unusual event that an OTAFU update fails to work correctly.

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