Again, much obliged for your reply.
I've noticed that the metadata.opf file isn't sent to the internal memory of the device: at least not when I'm sending e-books from Calibre to the device connected via USB.
To experiment with Librera, I manually copied an e-book folder from the Calibre main library to the e-books folder on the device internal memory; Librera can then read full metadata from either file: EPUB, MOBI and PDF.
Is there a way to use Calibre to send e-books along their metadata.opf files to the device?
Thanks in advance,
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