# pkg install ca_root_nss# fetch https://raw.githubusercontent.com/opnsense/update/master/bootstrap/opnsense-bootstrap.sh.in# sh ./opnsense-bootstrap.sh.in -r "major.version"
URL="https://github.com/opnsense/core/archive"
sh ./opnsense-bootstrap.sh.in -r "major.version"
sh ./opnsense-bootstrap.sh.in -r "21.1"
sh ./opnsense-bootstrap.sh.in -r 21.1
You can install 21.7.r1 and it should work just fine. I'm in the process of upgrading all the FWs to it by reinstalling on ZFS.After the first boot in 21.7 with the configuration restored check for updates (12 in the console) and that step will switch you to LibreSSL if that is what you're using and reinstall all the needed packages.The last step is to run the automatic plugin troubleshooter which will reinstall (almost) all needed plugins. I just reported that os-chrony seems to be missed but you can install it manually and the existing config for it will kick in on the spot.