I unlocked tablet. How can i install file manager directly from sd card

[Android Central Question]

I debugged tablet and now i am trying to install a file manager by sinply putting in an sd card but i cannot find a way to launch it/ install it. What should i do now

 

[B. Diddy]

Welcome to Android Central! Which tablet? What do you mean that you unlocked it and/or debugged it? Are you unable to simply install a file manager app from the Play Store, like Total Commander (which is free and ad-free)?