I had some installations not getting the Joomla! update warning for next version and found that it happens when the System Clear Cache is not clear it prevents Joomla! updates.
What happens is that in some installations I only have gantry5 in cache and it resists to any attempt of clearing.
How to clear hantry5 from cache?
That is joomla - nothing to do with g5. Go to extensions manager, clear cache there and then find updates button. Joomla updates will then find joomla updates.
Regards, Mark.
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