Flagfox 6.1.14 for Firefox 60+ has been released and is available for update and download from AMO.
Flagfox 6.1.14 changelog:
- IPv4 & IPv6 address location database updates for May 2019
Due to Mozilla’s recent catastrophic screw up with all addon signing certificates, you should make sure to upgrade to the latest version of Firefox: 66.0.5 for main release and 60.6.3 for ESR release. (formerly 66.0.4 & 60.6.2, prior to second fix update) Virtually all addons for all people on the planet are effected, Flagfox included. (a small handful continued working, but it’s rare; yes, this was as bad as it sounds) Older versions of Firefox can work if you let it install the earlier partial fix via the studies system, though many people disable that. (update instructions; more info from Mozilla)