I try to install linux kernel header by using:
sudo apt-get install linux-headers-4.19.50-ti-r20
I got errors:
Reading package lists… Done
Building dependency tree
Reading state information… Done
E: Unable to locate package linux-headers-4.19.50-ti-r20
E: Couldn’t find any package by glob ‘linux-headers-4.19.50-ti-r20’
E: Couldn’t find any package by regex ‘linux-headers-4.19.50-ti-r20’
I also downloaded .deb package file, but it was not successfully installed, either.
How to do installation?