@Jonte what firmware issues do you have? also is it affecting how ZorinOS is running?
You can find from the posts above and the link provided by @jgordon what worked in my case.
I did not neded to try the solution provided by @ManicMan
Edit: Is your post a duplicate of this thread?
Please avoid duplicate posts as this can cause confusion and dilute the support available. Maybe stop here and continue on that other thread.