5.42
Do is have to disable SIP (not even sure what this is) and is this essential for 5.42 to work, also can i go from 4.23 straight to 5.42 or do i have to install the versions in between first. i have opened terminal and pasted this command (/Applications/calibre.app/Contents/MacOS/calibre) and i get no such file so again very confused as not sure what this means. It used to be so easy to just download the next version and carry on, this is all to way above my computer knowledge.
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