![]() You'll see the DeDRM plugin double click it. Head back into Calibre's Preferences menu, then go to Advanced, then Plugins, then double click the line called "File type plugins". However, Kindle users will need to jump through a few extra hoop first. Using File Explorer, drag and drop the e-Books from your e-Reader into Calibre's main window, and all that nasty DRM will be stripped out. If you're taking books off your e-Reader, plug it into your PC via USB. If you already have your books stored on your PC, simply drag and drop them into Calibre's main window. If any are gotten wrong, which is likely without a way to test them properly, Amazon would immediately use that one for now and then keep adding more new ones over time.Įven if someone managed to get all of the algorithms correct, DRM removal would only work until Amazon deployed software with more new algorithms and blocked downloads to the older software.Now that all of the hard work is done, you can simply remove DRM by importing books into Calibre's library. In order to defeat KFX DRM in DeDRM all of the thirty or so remaining DRM algorithms would need to be reverse engineered. Making it known to the world would just result in Amazon switching to V12, causing all of that hard work to be for nothing. Keeping it quiet would mean that at least they could make use of it. Amazon is currently using V11, which DeDRM attempts to decrypt but does not do correctly.Īs things stand now anyone who does figure out how to defeat the current V11 DRM has a strong incentive to keep it to themself. ![]() They are built into the various Kindle apps and device firmware as highly obfuscated code.Įach algorithm is identified with the letter V followed by a number. Amazon has implemented around 40 different DRM algorithms for KFX.
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