Quote:
Originally Posted by meeera
To the best of my knowledge, the youngest Mac that can't (officially; there are patches) upgrade past El Capitan is at least eleven years old.
(And don't earlier versions of Calibre still run on it just fine?)
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But depending on which Reader you have, there might not be any support with an older version of Calibre. And say you have a Kobo with the latest firmware, you might not know that Kobo Utilities has support for the new series feature. Where that works seamlessly using 4.12+.
Yes you can use an earlier version, but you may lose features/fixes and/or support for your device.