Updating Early 2011 15 inch Macbook Pro OS to latest version
I have a perfectly working Early 2011 Macbook Pro that has enough memory and storage. I have not used it much in about a year so I am behind on updating the OS. I have macOS High Sierra (10.13.6). I am not able to use my browsers because they are requesting that I have either 10.14 or 10.15 or later in order to use them. But I cannot seem to update my computer. Why?