Using the adb root command [duplicate]

Question

This question already has answers here:

adb shell su works but adb root does not (11 answers)

Closed 5 years ago.

The 'adb root' command's description says that it restarts the adbd with root permissions.

I tried it on my phone (Note 2 Android 4.3), which is not rooted, and it didn't work. I searched online, and I found that even on rooted devices, it can give error messages as "adbd cannot run as root in production builds".

My question is under what conditions will 'adb root' successfully restart adbd with root permissions ?

Thanks.

Answer 1

adb root needs a development (aka debug) build with ro.debuggable=1