What does "CUSTOM BINARY DOWNLOAD" mean exactly?

Question

When I boot an Android device into download/ODIN mode, on the top-left it says "CUSTOM BINARY DOWNLOAD (n counts)" where n may possible mean the amount of times the device has been flashed. Is this correct?


— Exercise To The Reader | Sources

Answer

Yes, you guessed it right. It increases everytime you flash a ROM / kernel. It's also called binary counter. It's one way of checking if your device has stock ROM or not




The binary counter in a Samsung built device is a flip counter which turns up or increments a number after a non-official ROM is Installed.



— beeshyams | Sources

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