When debugging firmware I pray for printf(); but often have only while(1); #0xEBFE

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@th One of my favorite reverse-engineering stories is the person who "blinked" the contents of the firmware of a Canon camera out through an LED, and used a photodiode (from a ball mouse) connected to their microphone jack to record the binary as an audio file.

chdk.fandom.com/wiki/Obtaining

@varx @th

A similar thing was done with one iPod model’s firmware but using the click speaker.

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