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Old January 13th, 2013   #8
sblair
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For a well implemented controller, yes. But there are many controllers that allow any PID to be sent. So a user not knowing could easily send that PID without having a way to recover the device.

This is one of the reasons why firmware uploading is still best done as manufacturer-specific PIDs where measures can be put in place to protect the device.
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Scott M. Blair
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