It looks like the OP was trying to shorthand (not show entirely)
->Just updating Ubtuntu to see if it fixes the issue
->cloning a github repo and then trying to build a driver themselves
->Checking with modprobe to see if it worked (I don't remember the command clearly, I've only actually done this once like 2 years ago)

The syntax error at the end is probably more for dramatic effect and would've occurred when trying to make the repo. But at the bare minimum using Apt to update->upgrade your distro would update a driver if it was already installed and just outdated.