Now that the book is DRM-free, you can convert it to any format you like (MOBI for older Kindles, EPUB for most readers, or PDF).
If none of the above works, and you desperately need the book for offline reading (for research, a flight, or poor internet), there is a community-developed workaround. Warning: Use this only for books you have legally borrowed. Do not abuse it, as it harms the Internet Archive. how to fix download a borrowed book from archiveorg
The Fix: Use a browser extension that bypasses the 1-hour reader lock. Now that the book is DRM-free, you can
Ethical Note: This only works for books scanned by Archive.org (usually older, public domain works or physical scans). It does not work for modern publisher-supplied EPUBs with strong DRM. If none of the above works, and you
The Fix: This is the most common technical failure. Archive.org uses Adobe’s servers to issue a key for your book. If your computer’s clock is wrong, or if you haven’t authorized Adobe Digital Editions (ADE), this fails.
Step-by-Step Fix: