Hi O'Reilly support,
as a LEGO enthousiast I got the "The LEGO MINDSTORMS EV3 Discovery Book" as a print version, but carrying that around is a pain (I'd better carry my EV3 brick then :-) ), so I wanted
to upgrade to the E-book version, which I did with a number of other books I own. Unfortunately there was no upgrade offer available !? Do not understand why...
Is there a mistake ? (as I nowehere can find the statement that E-book upgrades are not available for nostarch originating books )
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