I’m want to get the latest stable release onto my Librem13, but I can’t find out how I would be able to do that.I found some info on compiling, but that is really too hardcore for me to install a browser. Plus, I don’t want to be compiling that all the time.
I can’t find any info on the correct apt repo, snap, or flat with which I can install the latest firefox.
Remember that if you need a certain version of software which is not in the PureOS free repo, you need to find the repo, add it to your /etc/apt/sources.list, install (or update) the software and then comment out or delete that line. Otherwise you may unwittingly install or update additional software from its non-liberated repo.
I like to keep a directory /etc/apt/sources.list.d for software-specific sources.list files for all my non-free software. You could have /etc/apt/sources.list.d/firefox-stable.list, for example.