Hello everyone,

I am flashing my Tizen RD-PQ device to the version 2.2.1 using this link: https://source.tizen.org/ko/documentation/reference/flash-device?langredirect=1 .

But when I want to install the 3D Acceleration, and exactly when I execute this command “sdb root on” the CLI window, I got this error

As you can see, I manage to log into the sdb console, but “root” and “on” are not recognized! even the next steps such as (sdb -d push …. ) is not a known command.

What should I do?