Quote:
Originally Posted by Colonel Cathcart
Sorry for the off-topic question, but now that the OP got his answer I think it's OK.
Why use old ADE version. Why 2.0.1? 3.0? I'm using 4.5
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The newer ADE can use Adobe's newer hardened DRM. Much like Amazon with their newer KFX DRM, this seems to be mostly used for textbooks. If you try downloading the book with an older K4Mac/PC or ADE, the download will fail. There is a fork of the DeDRM that supposedly does handle Adobe's hardened DRM but I have not done any tests on that—at this time, I don't purchase many textbooks or other ebooks in that price range. I've attached an image of the various options in ACS that affect the used DRM.
Personally, I use 4.5 since I've seen only two downloads that used the hardened DRM since Adobe introduced Adobe Content Server 5 in 2013(?)and I do appreciate that 4.5 has fairly decent EPub3 support.