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Old 03-08-2012, 08:16 PM   #16
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Of course, I have copies of K4PC going all the way back to 1.2.1, so it's not an issue for me personally, but for those who got caught this time, go grab a copy of 1.8.3, just in case.
I still have one of the original beta versions.

It can still be registered and used just fine. At least it seems they're fairly committed to supporting their legacy apps/devices. I realize that could change at any time, but I'd think if they were going to force someone to upgrade... they would have done it by now.
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Old 03-08-2012, 10:15 PM   #17
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Personally I'm still using 1.4 .
Me too...it seems like too much trouble to update, test, etc. unless something stops working!
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Old 03-08-2012, 11:05 PM   #18
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Old 03-09-2012, 05:36 PM   #19
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Originally Posted by pdurrant View Post
And for large Kindle files they seem to be a lot quicker!
DeDRM 5.0 is considerably faster, even for small files.
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Old 03-09-2012, 06:29 PM   #20
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How could it be faster? My previous seemed almost instantaneous anyway. Except for the rare topaz.
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Old 03-09-2012, 06:52 PM   #21
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Originally Posted by Synamon View Post
DeDRM 5.0 is considerably faster, even for small files.
Yes, but for small files (on my machine) the difference is between a few seconds and just under one second. For my largest Mobipocket file (a 26MB dictionary), the decode speed has gone from over 10 minutes to under five seconds!
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Old 03-09-2012, 08:54 PM   #22
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How could it be faster? My previous seemed almost instantaneous anyway. Except for the rare topaz.
I just processed the same file with DeDRM 3.1 and DeDRM 5.0, count of 8 Mississippis with the old one and only one with the new one. Maybe I'm more impatient than you are.

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Originally Posted by pdurrant View Post
Yes, but for small files (on my machine) the difference is between a few seconds and just under one second. For my largest Mobipocket file (a 26MB dictionary), the decode speed has gone from over 10 minutes to under five seconds!
Yikes, that's some difference.
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Old 03-10-2012, 05:06 AM   #23
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Do the v5 tools still work OK for books downloaded with old versions of K4PC?
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Old 03-10-2012, 05:40 AM   #24
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Do the v5 tools still work OK for books downloaded with old versions of K4PC?
Yes, as far as I can tell.
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Old 03-10-2012, 06:10 AM   #25
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Thanks!
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Old 03-10-2012, 03:22 PM   #26
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Hm...10 minutes to 5 seconds is v. impressive!
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Old 03-10-2012, 04:39 PM   #27
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Hm...10 minutes to 5 seconds is v. impressive!
Having peeked at the code, it seems to be down to two things.
  1. A native (compiled C++ code) implementation of the encryption algorithm
  2. Using a more efficient way of concatenating blocks of data in python

The first is mostly responsible for the speed up on small files.
The second is mostly responsible for the speed up on big files.

Obviously, both help with both small and big files, but that's the way the benefits seem to split.
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Old 03-10-2012, 04:51 PM   #28
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I upgraded the tools --though not the Kindle version-- and it really is noticeably faster!
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Old 03-11-2012, 05:49 PM   #29
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I have been using 4.8 with success using the drag and drop dedrm method (ie not Calibre). Do reinstall 5.0 overtop of that stuff without needing to touch Python? That is, follow instructions for a fresh install in existing directories? Or do I need to remove stuff first?
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Old 03-11-2012, 05:55 PM   #30
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I have been using 4.8 with success using the drag and drop dedrm method (ie not Calibre). Do reinstall 5.0 overtop of that stuff without needing to touch Python? That is, follow instructions for a fresh install in existing directories? Or do I need to remove stuff first?
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