How to install?

Hi,
Friends, how instal driver for 3,5 LCD, Waveshare?
I am copied file LCD-wave… to root /. Changed chmod to a+rwx LCD-wave-… end executing TAR.
After executing ./LCD35-show 3
system is rebooting, and LCD not work.
Directory LCD-wave is empty!!!

What I am is doing wrong?

73,

Piotrek, sp5xsb