See screenshot, when requesting to install Iceweasel I get an error.
I could install it from command prompt:
todd@librem-13:~$ sudo apt-get install iceweasel [sudo] password for todd: Reading package lists... Done Building dependency tree Reading state information... Done The following additional packages will be installed: firefox-esr Suggested packages: fonts-stix | otf-stix fonts-lmodern mozplugger The following NEW packages will be installed: firefox-esr iceweasel 0 upgraded, 2 newly installed, 0 to remove and 2 not upgraded. Need to get 42.1 MB of archives. After this operation, 104 MB of additional disk space will be used. Do you want to continue? [Y/n]