Description of my issue:
None of my Akeeba Backup installs have been updating from 8.0.6 to 8.0.8. Even if I install 8.0.7 and try to use the Joomla update system then to 8.0.8.
In the process of troubleshooting, I have discovered if I open Options>Live Update and then save (without even changing the Download id) I am then able to use the Joomla update system to update Akeeba Backup to the latest.